50 in xrp and 50 in bnb and wait 6 months and add 50 in each every month

In which currency should I invest 100$? One that is stable, I'm new.. I knew the .$BTC when it was at 1000 and I could never buy. 🥲😭

But now I'm making money from my job and I want to invest it
Which one do you recommend?

I'm thinking about Bnb and sol

$BTC
$ETH