Perhaps you could try friend-finding apps such as Bumble BFF? You’re likely to find others there in a similar position to yourself. It also focuses on 1 on 1 which should be a little easier to manage with social anxiety.

Clubs are a good call. Look into societies at your university, find something that you’re interested in or think you could be interested in. Societies are social in a way that seminars and other course activities are not. Don’t worry if you don’t “click” with anyone immediately, keep attending and do your best to engage in conversations.

I also recommend seeking out a university counsellor. Most universities will have them and their advice can be valuable.

I program for a living and I think of it more as doing the interesting tasks all day, rather than the mundane and repetitive. Chat GPT and GitHub Copilot are great for getting something roughly right that you can tweak to work the way you want.

Best of luck, get well soon