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As much as people dont want to hear it, you are best off having an account on a reputable CEX (Coinbase or Binance), buying there, and then moving to your Ledger. The small difference in fees/costs is worth knowing what you are getting. Talk to the folks that bought/swapped within Ledger only to find it was backed by FTX and they lost money.
Buy/sell on the major exchanges. Store on the Ledger.
Just my two cents from someone who has never had to deal with any issues.