I’m assuming you are concerned about UTXOs and how the crypto analytics companies can trace your BTC. I highly recommend looking up on YouTube, check out Matt Crater from Bitcoin University (has a course on that) and Sparrow wallet mixing service.

Essentially, you can purchase everything normally like everyone else does but use a mixer to anonymize your BTC on Blockchain before moving safely into your hardware wallet.

Definitely get a cold storage wallet.

Also please please support FitGirl by donating via crypto. Send your shit coins to her so those coins can actually be useful for once.