Its so easy to get distracted scrolling or playing games on a device and it really just sucks your motivation out. "Why clean my room when i can play a game which is much more fun?’ or quick five minute scroll breaks turn into half an hour.
When you get home from school don’t touch shit and just get straight to homework. Afterwards is when you can relax.
Its not even unmotivation half of the time. Its procrastinating.Rotting in your bed, being lazy sure isn’t productive, but it’s easier to chew than  the mouthful that doing something productive is. “i’ll do it tomorrow” “i’ll do it this weekend” Is a bad mindset to have that i myself am struggling with. It’s hard, but sometimes you just need to force yourself to get the fuck up and do something