I totally understand, i'm struggling with the same situation (only i'm not overweight yet) but I keep eating, to compensate with the things that I miss.
When I feel sad I eat, when I feel happy I eat. Any kind of emotion..
I'm not sure because I don't know you, but I think it could be the same with you as well, it's kind of a cycle you're going through
Unhappy -> food. Gains weight -> Unhappy -> food.
It's hard to make a start and keep motivated (i'm in the top 10 give upper list) but try to reach out for people who care about you and ask them to join you on hike's for example.
Or if you're my age, biking, soccer, football, tennis, skateboarding.
And if you have a dog walk your dog 20+ min, or anything like that.
I remember when I was living with family I had to bike 2hrs every day my legs got pumped I lost weight and felt great, the step towards exercise is a hard one.
Sorry for the long riddle, if you want to know anything or want to chat you can contact me, i'm a post chest op 2 yrs T FTM