Therefore, if the purpose of going to the gym is clear and you don't want to buy classes, you can firmly and euphemistically express that you don't need them at the first promotion, but if you hesitate, the fitness instructors are all old campaigners and they will chase you, so if you really don't want them, you must resolutely and resolutely refuse each other.
Fitness is your own business, so you don't have to be embarrassed not to go because you are afraid that the coach will sell classes. For what you said, I don't know how to face the coaches who sell you lessons. If you are clear and firm, the coach will not pester you repeatedly. If you are really a hooligan, you don't have to give him a good face. Of course, if you have the conditions to buy classes, you will certainly make faster progress and take fewer detours, but you must choose a good coach, at least his body can satisfy you. Otherwise, if you really don't want to buy a class, you can come to my home page and look at the cover, which may be helpful to a novice like you.