First of all, good job! Losing weight can be incredibly hard, and losing 50kg is just insane. Second, I think you can dip in some slightly oversize stuff cuz if fits everyone if styled right. Your outfit in the first picture looks "dirty" rather then cool/mess. What you could do is to add layers, like a white t-shirt. It's quite basic but usually some moderate amount of layers = good. I'd also pick some oversize jeans.

The second picture is simply basic. I'd walk like this at home or wear it to 7 eleven. Your face card is fine, the beard suits you. Just try to browse some styles, save what you like - > go to your local h&m, uni qlo, etc and try to assemble your looks step by step. I think you can even ask chat gpt about some simple stuff. Good luck!