What else can I do to get my brain back to normal?

So I work in blue collar which doesnt require much thinking and its super easy. Thing is, after work I usually just shower then eat dinner while watching video shorts. I do this until bedtime and even while in bed, I still watch relaxing ASMR shorts to help me sleep and I really believe that doing this for a very long time (10+ years) has made my cognitive function worse. I'm trying to recover from this and the first step to doing that is to stop watching short compilated videos of any kind. But now I'm thinking.... what else am I supposed to be doing while eating if I cant watch anything? Would just turning the TV help?

Also I plan to watch educational and long series videos of any interesting topics after dinner until bedtime on a daily basis. Would that help too?