I want to stock up on alts for the spot now. What do you think, should I buy now or should I wait?

Have you taken any courses? Or were you trained somewhere? You can't go anywhere without training nowadays, and you need more than six months of training to at least understand something about the market.

Depends on how to trade and what tools to use, CEX exchange allows you to use futures, P2P trading, that is, it is more convenient to use, but it is more risky if the exchange goes bankrupt, you will lose money. It is better to trade on DEX exchanges, where trading takes place with the help of your wallet, to which no one but you has access, but some instruments are not available there.