Two articles from the Finnish public broadcaster Yle. Most will need to translate the text since it's in Finnish, but should be easy enough.

Interview with Olena, whose town Russians occupied in 2022

She describes the early days of the occupation, with checkpoints, curfews, and people being moved to detention centers. Many civilians tried to flee the town to Ukraine-controlled areas. Some made it, some were likely arrested because they disappeared. Olena was eventually arrested herself, moved to a filtration center, threatened and beaten. She spent some time at a work camp. She was eventually released, after which she moved through Russia to the Baltics, and through Poland back to Ukraine, and she now lives in Kiev.

It's likely we won't know how many people were disappeared from the occupied towns, and their fates, until many years in the future.

Interview with Russian POW Sergei

He describes how he enlisted because he was under house arrest, and was then sent to the front with minimal training and information. The article also covers how Russian soldiers are encouraged to take their own lives instead of surrendering. Partly because getting medical treatment on the front lines is so difficult, partly because it's just cheaper to pay out a lump sum instead of providing long-term care for wounded soldiers. Question is of course how often that lump sum materializes.