Don't fall for the meat is bad narrative. High insulin is literally the mechanism that makes you store fat so it's carbs especially sugars that makes you fat and carbs overwhelmingly come from plants. You can lose weight on a plant based diet but only if you're in a calorie deficit and you will feel unsatisfied by it. You can eat as much fatty meat as you can possibly handle, feel more than satiated and never get fat if that's most of what you eat. I did this a year ago and lost a load of weight. I put it all back on because I sprained my ankle and started eating ice cream again.
At the moment I'm being strict with myself only eating when I'm properly hungry ie never snacking. Mostly eating meat especially beef but with some veg and carbs when I feel like it. Don't know if I'm losing weight but it feels right. Sugary snacks are the worst, they give you high insulin then your blood sugar goes lower than before you ate the snack and makes you hungry and you eat more just repeating the cycle.
Men need protein don't listen to the vegan bs, it's for foids.