Just be careful with altcoins because as some fall, they may not get back to the price you bought them, the only coins that I know you can buy but its price fall and later increase back is bitcoin. Also the way altcoins are falling, it can really be frustrating. As you think some has falling to 75%, it is possible they can still fall more. People buy them, dump them and move to another altcoin and so on. The most frustrating thing about altcoins is that they are not getting to all-time high, which means they are not store of value.
Just a few years ago, I had just learned about Bitcoin and crypto currencies and bought four altcoins. The biggest one was APE, which was priced at $17 at the time and was expected to go above $30, but it didn't, instead it hit its all-time low and is currently at $0.623560. So I doubt if this price will come back in the next ten years. But I think now that if I had bought BTC at that time, no matter how difficult the situation was, it would have recovered and today its current price is $105320.