First off I have no clothes you’d ever wear to a gym. I wear jeans and a t shirt pretty much daily (think Hank Hill). Second, I don’t get what you do there. I hated gym time in school (workout gym, not like throwing balls and running around gym, thats fun) and I don’t get what you do. Run on a treadmill and lift some weights? I feel like I could do all of that at home. Gym memberships are insanely expensive. Are home workouts actually effective? Does one even enjoy gym time?
Depending on where you’re at in life, gyms with machines can be really useful. It forces certain muscles to activate and if you’ve lived a sedentary lifestyle, it’s very useful.
Otherwise, yeah. The only thing you need is body weight and a set of dumb bells.
After that gets meh, get a squat rack/ bench press combo as well and you’re set