I can give you a bit of advice, I only just left Bronze about a week or so ago(to Gold, I'm also a Zerg). It's a lot harder than just making drones/scvs/probes. In bronze you're going to basically see three types of play, ground all ins, mass air and crappy macro builds.

I used the standard Zerg safe build for myself(probably not the best but it worked for me in bronze):

build drones until you have 9 supply
then build overlord at 9 supply
then build drones until 14 supply
then build extractor and then pool (stick 3 drones on gas when extractor finishes and mine 100 gas then take them out, and start ling speed)
drone up to 15 drones
build queen at 15 supply
build overlord at 17 supply
build starter lings at 17 supply (need 2-6 lings = 1-3 larva worth) (also put 3 drones back on gas if you want/need gas units like banes/roaches)
build expand at around 22 food
build spine when expand is up if needed (aka silly harass marines/zealots)

extra stuff:
Lair at 40 supply (for the mutas :D!)
Roach Warren at around 30 supply
Build 3-4 spines if you see an all in coming and then get roach or ling/bane depending on composition




For Toss/Terran:

Scout tons in the game with sacrificial overlords/lings to find out what they're making in their base and what units their amassing at their gates (Scout with a drone when you build your 12th drone, and send overlords to the nearest 2 bases either side of you at the start of the game, then scout every 2 in game mins but try to keep some starter lings/your scouting drone running around their base to force them to follow you and distract them)

What you need to look out for is 2 base only with no expands and a shit ton of marines/stalkers/whatever is up there waiting above the ramp = 2 base ground all in. Then you need to get at least 3 bases (stay on two if he is just about to push out) and get some info on what sort of stuff he has, loads of marines/stalkers/zealots + tanks/immortals + maybe 1-2 Colossi = ling/bane + muta

If you see a ton of spines/cannons/turrets/bunkers then you know it's a 1-2 base air all in (much less likely with Terran but some tards go battle cruisers...). At this stage you get a few queens (aim for around 4-5 against void ray harass) rush to spire (try and get lair around 40 food) with two base and go for corrupter (better at killing air than muta but useless otherwise unless you get broodlords) if it is air only, but Muta can work well when they're in small numbers and is better for your counter push once you get roaches + Bane to destroy cannons/bunkers etc.

If you see them taking their third earlish (in bronze like 15-20 mins) then you know he wants to macro and you can go ahead and take as many bases as you like, just watch out for drops by spreading overlords and make sure your creep spread is up and you get the right unit composition for their army by scouting with overlord/some lings.

For Zerg:

This is a horrible matchup as it is very knife edge even at bronze (creep spread, not losing workers/queens to lings/banes and larva injecting are super super important here more so than other matches):

I prefer doing a 9 pool with ZvZ as you can apply early pressure and not risk getting an expand, but it can easily backfire (make sure you scout as well, I usually scout with 9th supply drone if going 14 pool/gas or 6th supply if doing 9 pool). You can do the 14 gas/pool build still but you need a spine crawler in the mineral line next to the pool once the pool is up to deter the lings, and your queen should stay wedged between the pool and the hatchery to prevent lings from killing it off. Once that is done transition to ling/bane and be really careful of his banelings and then you can transition with roach once his ling forces have been dealt with.

If you just see spine crawlers at his base... be worried he is getting fast mutas usually so drop the evo chamber and get some spores up and get another queen. Once lair is done you can get hyrdas to defend against them and go for a roach/hydra push, but in all honesty I feel like if I don't get to muta first then the game is over, but you can hinder him if you kill off his starting mutas with your queens/spores. One way if you're behind tech wise and he gets a few mutas you can immediately build more queens at your most likely two bases (kill off mutas and transfuse micro them), and then straight away just immediately pull all workers and worker/roach rush with as many as possible. You can in most situations easily kill off his base before he does yours in with mutas, and they'll GG as soon as they see it coming.


Also general things:

Always try to expand every 7 in game minutes.
Always Larva Inject (use the inject then shift + backspace and click method)
Always get upgrades through out the game for ground/flying(if you're using flying units which you should be, muta are awesome)
Always Spend your money, if you see above say 700 minerals (and you can't keep it down through spending on drones/units, drop down another macro hatch or expand)
Always aim for around 60-70 drones total (if some die you make more) it should be 24 drones for minerals on both bases + 3 on each gas so for bases = 48 + 12 = 60 drones :D!!!! (you can check this by cntrl clicking a drone to see how many you have and just selecting them normally)