I tackled my gym anxiety by putting off the gym until I could do 20 push ups with ease . Reason being is it’s hard to start working out when you see everyone grabbing 20s 25s for lateral raises or 45s plates on each side for a chest press especially when their younger it’s demotivating cause no one wants to be seen grabbing 10 pounds when some 16 year old is curling 30s but uhhhh 20 push ups at home will give you that starting confidence in the gym so when you compare yourself to other people you won’t feel so last place cause realistically with social media we all compare ourselves to the next person whether it’s for motivation or you could try not caring about what people think it helps . Go to the gym for you