Is not holding BTC or ETH a mistake?

So I’m one of those guys who sold around 50 btc back in 2011. I recently got back into crypto but I really don’t have tremendous amount of cash lying around to invest. I try and buy the dips when I can. I’m not sure if this is the best strategy but I currently don’t hold any btc or eth. I realised that even if btc goes to 100k from 40k it’s just a over 100% increase. Not sure what the ceiling for eth is. Im currently equally invested in the following:

CRO, AVAX, Algo, CKB, Hedera, Luna, One, Matic, DOT, Atom, LRC. I have over $2000 but less than $2600 invested in these. The logic being some of these might see 2x or even 3x the gains. And then eventually I could use those gains to buy btc or eth if needed.

I don’t put everything in crypto though. I divide my monthly investments between crypto and equity equally. Unless one of the two has a major drop.

Am I missing something?

Edit: If you do think it’s a mistake, I’d appreciate some reasoning behind it! Honestly looking to learn more.