I would recommend holding BTC and ETH first of all. Then comes other big players that still remain underpriced like $BNB, $DOGE and $BGB. These guys have strong backing too, so it sorta makes them also the safest cryptos to hold.
You made the right choice, where Bitcoin and Ethereum are the two best choices and cannot be separated because, up to now, they have always provided decent profits for their holders, and, of course, they should not be missed and continue to be held. Next, of course, the one at the end of last year made a surprise to continue to increase, namely SOL, then there was BNB, which gave a surprise for ATH in 2021, and Matic. It seems it's better to focus on a few coins so that it's easy to carry out corrections and monitoring.