It is a normal reaction, there is nothing wrong with you, it will pass. Don't try to think your way out of it, acknowledge that the feelings are there and let them pass through you.

Kick its ass back by doing high-energy activities! (conversely, if anxiety is the problem: low energy activities)

I can't tell if you are surrounded by the worst people, or if maybe anxiety about it made you mistake them noticing something unexpected for a bad reaction..

But in either case, that is absolutely nothing you should be hiding. You fought death and you won, and you have a scar to prove it ^-^

There is nothing there to feel ashamed of or hide.. Sounds like anxiety has been lying to you to keep itself around.

Nobody worth anyone's time is going to react badly to it.

When in.. do as..: Get a Mk.1 Reliant Robin ^_-

Firefox always uses a profile even if you don't make one. Usually called "default". You can see your profiles or make a new one by putting "about:profiles" in the address field ^-^

Have you tried making a new profile for Firefox? Browser profiles tend to degrade over time.

If that doesn't work you could try Brave or Vivaldi.