I used to suffer so hard from imposter syndrome in the past. I came to accept that it’s just a sign of me constantly pushing myself.
Another thought is it just means you are learning new things and out of your comfort zone. Getting used to being comfortable with being uncomfortable is a game changer.
Assuming everything I do is awful has been a crucial part of everything good I’ve ever done. Early on at least, it was a learning process to shed it to not be weighed down later
My general approach is to try to put myself in more rooms where I'm the least knowledgeable person in the conversation, and then learn from those around me as quickly as possible. It's hard though.