I once bought some ADA in 2018, before the total dump of all crypto currencies, tokens have never approached their ATH since. I think I still have some tokens on my old wallet, I do not touch them, because it makes no sense to sell them now. I was not following project since dump, not sure what the current situation is.
You are very lucky to have bought these tokens back in 2018 and I agree that now is not the time to sell.
Cardano and Litecoin are working on a Crypto collaboration (‘Velvet Fork’ Partnership ) so maybe we see price increase in both coins.
This collaboration will test cross chain communication between the 2 crypto currencies.