Need Help with Weight Gain and Gym Please Guide Me 🙏

I’m a 19M, 5’10, but my weight is stuck around 50–52 kg. No matter how much I eat, I just don’t gain weight (cuz of high metabolism). Until now I didn’t take it seriously, but now I really want to change.

The reason is I have the most amazing girlfriend, honestly the prettiest girl to the mankind, and she chose me! That makes me feel like I should also improve myself, not just for her but for my own confidence too. I don’t want to stay skinny anymore, I want to build muscle and shape my body. 💪

The problem is, in my town there are no proper gym trainers, so I don’t know where to start. That’s why I need help from you guys:

1. Diet: What should I eat to gain weight? Any simple, effective food plans you can suggest?

2. Gym: Which exercises should I focus on first as a beginner?

3. Timing: Is it better to work out in the morning or in the evening?

4. Supplements: Should I try protein powder/gainers or stick to normal food for now?

5. Lifestyle: Any other tips like sleep, routine, or habits I should follow?

I’m ready to put in the effort, I just need the right direction. Please share your advice and experiences I’ll follow them seriously!

Thanks in advance 🙏