Looking for motivation need to lose 50lbs

I lost 60lbs before using this app but one day at the gym a guy told me, I was bigger than you and I can tell you the gym will not help you? He tried to explain, and I walked away and left the gym and haven’t gone back. So now I’m going to try again, this time ignoring negativity! I’m just looking for friends who can motivate and help keep me on track and vice versa!