What are some workout tips?

I hate the feeling of being wet and I get out of breath easily and I can’t work out if the beat of the music is different than the pace I’m trying to go…

Sensory absolute hell.

What are really truly any possible tips?

Clothing? Music/sound? Light somehow? Hydration? Like is it more important to have a water bottle that fits in a holder or one that’s big? I have electrolytes already. Do I drink them during or before or after or all of the above? How do I deal with being self conscious and super out of shape? What types of exercises do you like if you get super out of breath really easily?

I’m my all time fattest. I signed up for the crunch fitness opening close to my house. It’s not open yet. I have time to mentally prepare.

My leggings all roll down. I’m guessing they’re a size too small now and that’s why. Shorts ride up with my fat thighs. So maybe biker shorts?

Literally any and all tips.

Side note, can’t do protein shakes since I can’t do zero calorie sweeteners due to migraines. I have chronic refractory migraines so working out may be a long shot.