the coins you have are more than enough to invest why don't you add to the supply of existing coins for example you add to ETH or to LTC
or if you want to really add to your investment collection why don't you add BNB, I think BNB in the next 6 months is very good, especially now projects are switching to BNB because ETH is currently not friendly to its users
Because the eth gas fee has a big effect on investors, that's one of the reasons why the number of eth users is decreasing and now bnb is being used more because of the cheap gas fee and not only that, there are also defi projects. more recommend or accept bnb fees on their presales because they know it's cheaper than ethereum.