Start by eating your meals and never ever snack.
And if you cant help yourself. Use fruits to snack on, like apples. Or fatless, sugarless (just hard plain) yoghurt.
Never drink soda, even coke zero pepsi max etc, theyre still conditioning you to enjoy extremely sweet drinks and food even if technically they dont have sugar, tgey still have aspartame and other sweeteners fucking with your brain.
Drop the salt. People eat waaaaaay too much salt, you need to drink even more water to flush it out of your body so put less salt in your food.
Once you start with all this. You can then start modifying your meals.
Losing weight is all about your diet. You could be goibg to the gym for 7 hours a week, if you eat more than you burn you’ll never lose weight. You need to build a better rapport with food and respect your body enough to not fill it with trash.
Good luck dude.