How do you not give a fumo?

I don't know if this is the right place to ask this, but you guys might be the only ones that will understand... what it's like to feel ashamed!

For example, I want to wear shirts, pins with my favorite anime characters, but I only wear plain clothes.

I want to scroll TikTok, Reddit, social media during breaks at work, but never do, because my co-workers might see my phone screen full of anime.

I want to go outside in the city with my fumo and film funny videos, but I'm a grown adult man and people are going to stare weird.

I never talk about my interests, never reveal anything about myself, my opinions, likes and dislikes, hobbies, because everything revolves around anime, manga, games and fumo.

I have no real-life friends, no family, only talk to my fumo... And yet, I can't muster up the courage to stop caring what random people think of me. Because I can't handle judgment and ridicule. I'm too embarassed to exist.

Can anyone here relate? How did you stop giving a fumo? ᗜ˰ᗜ

edit: thank you all for giving encouraging words and advice, I really do want to change and care less... i will try my best!