Do you compare your English level to other people in the meeting?

The answer is probably yes - because that is human nature.
Certainly, many of my clients do this when they first come to me.
And in meetings it makes them:
       -feel like their English is not good enough
       -let others speak instead of them
       -stay quiet even when they have a point they want to make
 
“Everyone's English is better than mine.”
 “I make more mistakes.”
"Jan has such great vocab, I always feel my English is so basic in comparison"
 
But if this sounds like you, stop and think about it.
You are NOT in the meeting to impress people with your English.
You are in the meeting to share your knowledge, contribute ideas, solve problems and work with your colleagues.
 That’s it.

The goal is not to speak English at the same level as your colleagues'.
The goal is to communicate effectively at work.
So the only thing that matters is that your English is good enough to do your job.
 
The English level of others? Not relevant.