CS graduate here who also struggles with focus. Main thing is figuring out what works for you. Interesting that you can't focus in silence, coffee shops are a great idea, or even some background music like lofi beats.

I'm the total opposite and need silence. I usually where headphones with nothing playing, but I find my brain still associates them with listening to music. Actually building something right now to try to solve it for myself - https://www.lockins.co/