If you buy KYC-free and P2P no one should be able to know you bought crypto in the first place.

If you aren't already familiar - get comfortable using privacy tools. Use a good VPN like Mullvad or IVPN and/or Tor. Keep your real identity completely separate and don't mix them. Create an email specifically for these things with Proton or Tuta. Use email aliases and temporary emails where you can. Use burner numbers or no-kyc sms verification websites when they're needed to create accounts. Use encrypted messengers like Signal, SimpleX, Session, XMPP (OMEMO), or PGP to communicate.

#1:

Best way would probably be to withdraw physical cash and send cash-by-mail using LocalMonero, Bisq, HodlHodl. Or find crypto ATMs near you with little to no info required and buy using cash.

For a bit more convenience and speed you can use payment apps like Cashapp, Paypal, Zelle, etc on those sites above. There is no way for them to know you sent a payment for crypto unless you say that. You can make up a reason or simply leave the memo blank. If you just use common sense and avoid suspiciously large amounts, you won't draw any attention either...but I'm sure you want to be extra cautious after what happened and I don't blame you.

#2:

If you know friends/family/someone that already buys crypto off exchanges anyway, and doesn't plan on changing that, you can get them to act as your proxy. Ask them to buy you crypto and pay them for it for a slight premium to incentivize them. Ask them if you can buy something they're already planning to buy or pay bills for them in exchange for crypto.

#3:

Sell stuff for crypto locally, over Telegram groups, or on p2p markets:

Hey, let’s go out to dinner and see a movie