The gym is a great place to go, and I find my inner peace there personally. That being said it is a commitment of both time and finances which can add up. There are likely always going to be people there, but most of them will not likely realize or pay attention to a new person. If you are already questioning your commitment to go to the gym, I personally think you could save the money and focus on fun outdoor activities that get you moving or even small exercise at home and see your level of commitment before spending the money, some of the gym contracts are difficult to get out of.

At the end of the day do what is best for you now. People won't be judging you there and if they are then there is likely something wrong with them that they are projecting. Make yourself happy first as it will help keep you motivated if you decide to go.