Just started working at a smoothie shop and I’m soo cringy

Hi I’m 24F with a history of depression and cptsd I’ve struggled with all my life. I I have visceral memories of when I would say or do something so awkward and embarrassing as a kid and teenager. I essentially just started using work and school as a distraction from how inept I felt as a human interacting with other humans in an enjoyable way. But I come off as agreeable and open and sometimes bubbly when I’m in a good mood and when I’m comfortable, but always pretty aloof. I have worked in small smoothie shops/ cafes for 5 years straight and then during COVID shutdowns happened I essentially spiraled into almost agoraphobia. Feeling so depressed and would just go to work and come home so I went into debt too. I didn’t put a lot of energy into work the past 3 years (I started working as a nanny/babysitter) I stopped putting energy into friendships so I hardly have any friends now. I feel poor, like nobody wants to be around me, and like I don’t really want to be where I am right now. I turn into a robot at work because I feel like I just need to get it done and I feel like everyone I work with is so annoyed by my presence since I’m not really fun to engage with. I try but then I make it awkward or say something stupid and then I get really anxious and get really quiet and in my head and try to think about how to recover, which makes it more awkward.
For reference everyone there is really nice but they’re all friends and have worked with each other for a long time so I just feel really out of place. I also just feel like I’m not cool enough or like I’m embarrassed about who I am.

Essentially, I need tips on how to get better because I’m starting to feel hopeless and like I might want to quit and move towns.. thank you in advance!