Advice on investing

Recently I started managing my money. I am young male, still living with parents and I dont heave real financial obligations. When I say that I mean i dont have to pay rent, taxes etc.

I work for daily allowance as a bartender and I used just to spend money randomly without any tracking.

I decided to write down every earning and every expense and I devided all my money in 3 categories:

• spending 60% (going out with friends etc)
• savings 25% (no spending expect urgency)
• investing 15%

So I decided to invest 15% in a real gold but I also want to invest part in crypto. Since I am completely new to crypto and I dont know anything about it, my question is what coin should I invest in? I am not interested in trading and similarities, I just want to know what is best coin to invest in and leave as it is. I am willing to take 100% risk of the money I invested in crypto, without expecting any crazy jumps. I am not talking about investing $1000 and all of a sudden becoming millionaire. I want monthly to invest a part of my earnings into crypto.