being a fat person myself. thankfully i haven't. it's actually rare for it to happen these days which your story surprised me off. maybe change gyms? because the culture there doesn't seem to be good
I agree, look for another gym if possible.
The gym I go to (people and staff) would never tolerate "fat shaming". We're all there to get and keep fit.
There's a much nicer gym across town but it's full of fuck heads, so it's not worth it.