cardano and xrp might be good in the future, but don't forget etheruem, have ethereum in large numbers. it will give you more profits, for this year and next year.
Ethereum may be the right choice but not with XRP and ADA, because 9.3M XRP and 2.5M ADA have been hack from Bitrue.
This situation will definitely have a negative effect on the price of these two coins, at least for the next few months
XRP and ADA are currently still at great risk after many issues hit the two coins. so choose the one that is certain and can already give a big profit like ethereum.