Most altcoins will increase and fall massively. What happened today is not new on altcoins as they are pump and dump. This is the reason I prefer bitcoin. Yes bitcoin fall today but know that this is not new at all. This has not changed the fact that bitcoin will still increase back and get to ATH.
The main difference between Bitcoin and Alts is that Bitcoin will eventually recover to cover up the losses but that's not the case with Alts. Bitcoin price bounced back strongly after the news of pause in tariff broke out. I am not a big fan of Alts that's why can't tell behaviour of Alts on that news but there recovery rate is less compared to Bitcoin. If you are investing in crypto then your first choice should be bitcoin because it's for long term while nothing can be said about the life of an Alt.