Methods to obtain privacy in Bitcoin:

- Joinmarket (decentralized Coinjoin).

- Payments with Lightning (payments through routing are totally anonymous, good method for example to put bitcoins coming from coinjoins in exchanges, you must open a private channel with a good node and through this route to the exchange).

- Liquid Pegouts with sideswap (it is like a swap and you break traceability)

- Bolts (swaps between chains and you also lose traceability)

- Joinstr (Coinjoin through Nostr, soon to be released on the mainnet).

- Mercury Layer (Coinswaps, soon to be released as well).

- Bitcoin Teleport (decentralized Coinswaps with an architecture of makers and takers similar to joinmarket).