Before you begin spending your BTC, keep in mind a few things:
Bitcoin is NOT anonymous; if you buy from an exchange and being spending, it can be traced effortlessly
Mixers and tumblers only provide obfuscation and can often be useless as you could be trading your coins for dirty crypto
Follow this to anonymize your coins instead:
1) Convert your BTC to XMR (Monero) using an atomic swap. You can find a swap provider on unstoppableswap.net. This prevents fees that may incur from a regular exchange or swapping service.
2) Use a swapping service to convert the XMR back to BTC. Unfortunately, atomic swaps do not exist yet for XMR -> BTC, so you will need to use a swapping service such as any listed below.
Non-KYC swapping services:
sideshift.ai
fixedfloat.com
bisq.network
xchange.me
3) OPTIONAL: Consider using Wasabi Wallet (wasabiwallet.io) as your BTC wallet, as it provides an implementation of CoinJoin, allowing you to cover your tracks when spending Bitcoin.
