Idk how to lose weight ! Almost 300 lbs 💔

I seriously don’t know where to start on losing weight ! This year I’ve gained at least 20 pounds and I know it was due to anxiety, stress and feeling super insecure about myself. I want to take my life back and take control of my weight , but I really know know where to even start ! I’m heavy weight so I can’t do HIIT workouts yet without feeling so sick! I want to try working out at home but I feel like I always lose motivation! I am vegetarian and I have been the past 5 years and I’ve noticed that I’ve only gained weight ! I sometimes struggle on what to eat and I make

numerous recipes that don’t taste as good for me to try again! I’m just tired of being in this big body and I really really want to change my weight and how I feel about myself! I want to feel confident! I feel so discouraged because of how big I am! 😞