Safest bet is buy BTC, write down your seed phrase or private key on 2-3 separate pieces of paper, laminate, store in different physical locations, or if at home at least store in a fire-proof safe, and don't look at it and try not to think about it until 2024.
This is not financial advice. But if I ever were to give financial advice, this would be the most sound, most fool-proof.
I think all the coins I listed have a great future, but how much will they go up and by when? Who knows. Look at fundamentals. What problem are they actually solving? How do they provide value? Who is behind it? etc.
FLUX was one I was looking at since $0.30. Decentralized internet. Very cool idea. Now $1.50 or so, kinda missed that boat... but is there another boat at the dock to go from $1.50 to $15? Very possible if ICP's price can tell us anything (tried doing the same thing, falling though as FLUX rises.)
BTC dominance is real. If BTC goes to $100k, HNT likely to $100, and likely to see 8K+ ETH too. Personally, I don't like ETH as a project, but it's profitable to mine. XCH is very much a long-term play. They are about to announce a HUGE announcement. They will be the blockchain the World Bank runs their World Bank Group Climate Warehouse on... so... that'll be yuge.
See
https://www.worldbank.org/en/news/vi...mate-warehouse for explanation of what it is
Bull run likely to last til Jan/Feb of 2022.
As always, I am just one hypomanic, aut-weaponized misunderstand memester who roleplays an obnoxious neckbeard to act out a message few seem to be picking up, so uh...DYOR - do your own research.