It can be hard to socialize sometimes, especially after lockdown and how isolated we all were. I can only imagine how difficult this may be making uni for you. Do you know if your university has any support that you can contact regarding getting some help with this like a counselor or mental health support?
Also, may I ask why you don't feel like you can talk to your friends about this? Is it related to you feeling anxious about that too?
Hope you are well 💙