A’ight Brody, here’s the deal. You have had a few heavyweights give you great information, so here’s some from a lightweight.
Nobody in a gym has any qualification or credibility to laugh or to make fun of you. I related in another thread about thinking a young man was squatting incorrectly, and instead of speaking to the dad, or the kid, I asked the owner. The owner is a good resource, and he explained to me that the kid was squatting correctly, but different from how I squat - high bar versus low bar.
Of course, I realized I was an idiot, and frankly, that’s why I don’t ever approach others. Some dude may be doing quarter squats in the Smith for a reason. I may not agree with his reason, but, he’s got a reason.
Most dudes on a website will be way more harsh than some dude in the gym, so take it with a grain of salt.
There are tons of really smart and accomplished guys here that will give you feedback if you post a video. Check my thread - I’ve posted a few myself. And the advice is phenomenal - again, check my thread. I get phenomenal advice from @MarkKO, the Punisher (can’t figure out his screen name), @FlatsFarmer, @Benanything, and a bunch of other dudes.
And, most likely, these guys are so much smarter than the smarmy motherfucker at your gym
But, you might just find some normal dude that is jacked at your gym. If he’s lifting heavy, not on his phone all the time, timing his rests, he probably has a good idea what he is doing - just ask him for some form help. He’ll probably be flattered.
Finally, just lift bro!