This break up has left me in a dark place

So I just had a brutal break up with a girl I did want it to end with. It caught me so off guard because I didn’t see any issue and was happy and the next day she ended it suddenly, don’t want to get into reasons but I didn’t do anything like cheat to make her cut it off she wasn’t feeling it on her side basically.

I feel like I committed way too much with this girl as I thought she’d be the one I marry and spend the rest of my life with so it hate me really hard. We got to a point where I emotionally opened up to her to and it’s essentially my first relationship.

People say the best thing to heal is spend time with friends and family. Issue is it’s exam weeks for everyone so there’s no chance of that happening, i’m on my own essentially.

I’m basically left in my room to my own accord and I can’t help thing of things I did wrong in the relationship and how I could have been better and how it’s my fault. It’s destroying me and I can’t see a way out. All my music in my playlist has some sort of love element and it just reminds me of her, there’s no new games or movies out for me to watch or play. Iv literally sat on my bed all day feeing sorry for myself. I use to spend a large amount of my day taking to her or being with her and I just have a empty void there now.

Any help for me to get out of this dark place?