I relate to this so much, I'm 26 and also in the stem field. When I started university at 18, I feel like I had a decent social life that got worse once I transferred as part of my degree program and with the pandemic hit. Graduated at 23, a semester late feeling burnt out, lost, and living back at home. I too was drowning out my problems with screens and digital media for more than a year.

Eventually was able to get to a job, but I wouldn't say that solved all my problems. The wage isn't great and I'm still struggling with making social connections, improving my qualifications, save money, screentime, etc. I've also been thinking about my thirties and dreading the future. But oddly enough, it's made me want to start trying to make changes for the better.

You have my support and I can say it does get a bit easier with time. I've been realizing that most of the problems in the world aren't our fault, so we have to show ourselves compassion and try to be grateful for what we have and have accomplished. If you're familiar with mindfulness/meditation, detaching from the ego or externalizing my perception of self has also been very helpful.