I think that buying Bitcoin is also a wise decision. You didn't get profit from Cardano now, but I am sure that if you are patient enough, you will hold Bitcoin for a while and you will also get a good profit. Moreover you are so young and already involved in crypto, so you have enough time to make money on this market, so just take your time and don't give up.
I agree, but this is bitcointalk and we're all bitcoin believers, even those who pretend they're not (you know who I'm talking about bcash people).
But it's the last piece of advice I would ever want to give to people who've lost their money already. When you go in, you're chasing losses and that kind of psychological exertion on buyers is never preparing them to be long term investors.
I would take a step back and relax, and live life normally. Put some leftover spare cash into DCA for BTC and that's it.