I want to get into cryptocurrency, but my account won’t allow me to purchase crypto directly or through a spot ETF.

So I have a Fidelity custodial account, and I really want to get into cryptocurrency, but my account won’t allow me to purchase crypto directly or through a spot ETF. So that leaves me with the option to after a company like Coinbase or Microstrategy. I’m concerned about microstrategy because I’m concerned about Bitcoin with their lack of quantum resistance, but I feel like they could still come back up at least one more time? And obviously if Bitcoin goes quantum resistant, then that risk is no