Should I stop?

I think I'm addicted to csgo gambling. I'm 15 years old. The last few days I've been buying skins on bitskins and then gambling them on different betting sites (Coinflips, Jackpots, ect). I started out thinking it would be fun and maybe I'd make some profit. I put in 5 dollars, which I promptly lost. Well, I thought to myself another won't hurt, and I bought another 5 dollars worth and said that this was my last one. No surprises, I lost that too.. That's when I decided that I'd put in one more 5 dollars and that's it. But it wasn't the end. I just keep betting and losing my skins. I've lost about 76 dollars now. At one point I went in with 5 dollars and got 40 dollars but of course I got greedy and then lost all of it. I'm thinking that I'll put in a 15 dollars then snipe pots. I don't know what to do, I just want skins for my weapons and I feel like I can win it back but that's what I've said the many previous attempts. I've been betting all day, spending more time on betting than the actual game. My whole inventory is empty. I don't know what to do anymore.