Strawberries are not easy

I started 8 seascape strawberry bare root plants in Dwc setup maybe two months ago. They were doing poorly so after some died and I put a few in soil- I'm left with these. I change out water every two weeks (probably less often honestly, Everytime I do it they die back a lot I feel. I think maybe it's because they are getting moved around and shocked). They seem to be doing much better in this smaller 6.5 quart container. When I had several more plants going I had them in larger container with same air stone. I do feel like the ones closest to the air stone have done the best and that's why these are doing better in this size container. Anywho I'll take any advice. I only started hydro a few months ago but everything has been going great except for these haha.