There are many options to choose from depending on whether you can manage it or not. The amount of $30K USD is a lot in my opinion, you can use it to buy good coins like Bitcoin, Ethereum, BNB or Matic. With a bear market like this, if you want to get maximum profit, it will be very difficult. But if you want to trade long term it is the wisest choice. So think carefully before you act, because the possibility of loss is still there if it is at the wrong time.
Yes, there are many options, however, the ones with the least risk are bitcoin and ethereum. he might be able to choose a new coin, but the risk was too great. Personally, if I want to invest in several coins with an amount of $30k, then I will choose the investment that has the lowest risk, because I feel that $30k is big money. So, I might prefer bitcoin and ethereum.