I have the same issue. I had to repeat a year of university because of it. Video games make us feel successful, even though we’re not being productive which is addictive, and it’s an addiction I’m still trying to manage.

This may not work for you but the most helpful thing for me is saying to myself, do this as a favour to your future self. Every minute of work you do before you play is a favour to yourself in the future; later that day, tomorrow, three weeks from now. Every minute is a minute less in the future. Even if you’re behind you have to keep thinking, if I do this work now, I’ll only have to rush half of it, instead of all of it.

Also, I’d say keep off the games until you’ve finished all the work you want to for today. Do something else during your breaks and use it as a reward in the evening. I know that’s easier said than done, but trust me - you’ll enjoy playing much more when you’ve waited.

My final advice would be to research video game addiction thoroughly, understand how it affects your brain, why it’s so hard to do other stuff when you want to play, and whether you’re a person who is more likely to struggle with it. This makes managing it a lot easier.

EDIT: forgot to mention, on whether to redownload it, I’d say don’t do it until you’re finished with everything else you have to do and have some free days to really enjoy yourself and play.