Faster, cheaper, unreadable on-chain.
Hold Monero in a wallet you control such as Feather or Cake, open your Osiris order, copy the Monero deposit address it issues, send from your wallet, and wait a few minutes for confirmations.
If you already hold Bitcoin, Cake has a built-in swap that converts it to Monero without an exchange in the middle. Otherwise buy Monero peer-to-peer. See non-KYC funding.
Osiris issues a fresh deposit address per order, so there is no address to reuse. Monero confirms quickly and the fee is tiny, so the balance credits soon after you send.
