Easiest way is probably swapping some Bitcoin for Monero using an aggregator like trocador.app
Or p2p using Retoswap, Bisq, Robosats, or Eigen wallet (atomic swaps)
https://retoswap.com/
https://bisq.network/
https://learn.robosats.org/docs/quick-start/
https://eigenwallet.org/
