This year might be different...looks like certain altcoins will be good investment. Litecoin and polkadot especially by the next halving get in position. Keep using Bitcoin but look for the next one.
There were altcoins that have made themselves to their peak and it's good for those who have invested in it and bought at the most discounted price.
I would say that learn from the experience, buy bitcoin and then buy altcoins if you want to. Keep bitcoin more.