A bit of background to the question: I accumulated Bitcoin many years ago and then moved away from Bitcoin due to my job, life and other circumstances.
I have lost my wallets but I am currently working on a solution and looking for access as I still have found something I forgot about in my house.
If I find access to my wallet, I want to use Coinjoin because I don't want the recipient of my transaction to know the original balance of my wallet.
Coinjoin transactions are dangerous for users nowadays with more regulations against it from governments and centralized exchanges. If you don't have illegal issues with your past transactions from which you got those bitcoins, you can move it to other new wallets, and separate your initial bitcoins to different wallets and UTXOs, do it several rounds, before you can use your bitcoins with better privacy.
You can use Bitcoin full node and Tor for broadcasting your transactions.
Some tricks on doing this better.
https://bitcoiner.guide/privacy/https://blockchair.com/bitcoin/privacy-o-meter