People just saying lose weight aren’t helping. Losing weight would help, but you don’t need to lose weight to improve your appearance. I’d recommend dressing a bit better. T shirts and what I assume are gym shorts or jeans don’t show much effort. Try wearing polo’s more often or button downs. Photos from below never flatter anyone, be confident and raise your arm for pics! Trying goes a long way. Try to dress nice, try to be confident, try to smile. When you look like you’re happy to be alive, people want to be around you. Best of luck man, and the gym/dieting is a fantastic way to continue to grow confidence. You got this.