Totally agree with @MsMartini I've trained at a commercial High street gym, and currently train at an independent gym with a focus on lifting (and has power lifters, body builders, and functional fitness/Hyrox people). All sorts, at my current and my previous gym. And the lifting classes usually have many more women than men - to the extent that they now run women only lifting classes, and mixed S&C and circuits sessions.
Also, one class! You need to give different ways of training a bit more time and get a bit more experience before you dismiss them! One class is hardly enough to make such a dismissive judgement. A strength & conditioning class is probably just what you're looking for but weight lifting/strength exercises take time to learn. I've been training seriously & lifting heavy for almost 7 years (started in my late 50s) and I still ask for coaching tips from S&C instructors. I'm still learning.
I also take ballet classes, and regularly take a very basic beginner's class (even though I was an advanced dancer) as it's very good for me to go back to basics. The teacher I like always starts absolute beginners by warning them that ballet will feel weird for the first few weeks, but to give it time and just try to get the basics, and in about 3 or 4 weeks, it'll start to feel more natural. It's the same with resistance work which can get quite technical.
It's about learning. You'll start to remember, and anyway it's the instructor's job to keep on coaching & reminding you. I wear contact lenses instead of glasses, or I take a photo of the whiteboard to remind me. But the classes I do, we're usually working in pairs of groups of 3 - it's a great way to be motivated & to meet fellow gym members.
And IME of what looks like a "bro" gym such as the one I'm at, the beefier the bloke, the sweeter he is. I've had them cheering me on & applauding when I've done a heavy sled drag (I do very heavy sled pulls or drags of 200-300 kilos) or deadlifts. The beefier the bloke, the more he knows about the hard work it takes to build muscle - so when they see people really working hard, they are all there for you!