very

Hi, would it be better if I just quit YT and the like flat out and have something better and more productive to do in my free time? For reference, I'm a high school student that wants to get into a good college but wasting time is really taking a toll on my goals.

I've blocked websites like Reddit and Quora and Youtube but sometimes when I feel like I've done a lot of work, I always get this "urge" to reward myself and the only way to quench it is to do something unproductive like watching a YT video and get sucked into it for like 3 hours or play games for a really long time. Now that I've blocked those websites what should I do in their place when I'm tired?