one way to minimize your tax liability in the USA: if you mostly just hold for long periods of time, consider aiming for long term capital gains: if you hold for at least a year, your gains are taxed at a lower rate, usually 15% for most people. short term capital gains are taxed at your regular tax rate (up to 40%).
So much this.
You should also try to avoid crypto-to-crypto trades because each instance is considered a sale and a purchase.
If you want to take extreme measures, move to Puerto Rico lol.
From what I've heard the IRS will hound any former US citizen and resident for taxes no matter their current location. You may not have to pay them, but you would still have to deal with them, so good luck with that
