It is hard to find such mineable gems and you just have to be lucky. I used to mine XHV like 2 years ago, then its price dropped and after a few months of it going sideways I sold it with minimal profit (or precisely - I was on 0 counting energy bills). Then after a few months it mooned like x10 but I was without it. Same was with Loki, it was so easy to mine it like 2 years ago and in 2020 it gained a lot of hype and momentum. Ones who held could be happy.