When it is not so crowded, as you may get less attention from the other people.
It will be optimal to go when there are few people in the gym and they do not mind if someone has a heavy bag instead of using free weights. This way, you can focus on your workout without having to worry about others or their feelings towards you. You can also ask for help with equipment by asking if someone nearby wants to use any piece of equipment that does not belong to them (for example, taking a bag off another person’s shoulder). Be aware that some gyms have policies against this kind of behavior out of concern for safety issues, but most will understand what is going on and won’t mind too much. Just make sure no one gets hurt!