Let’s say you need three transactions a week, that’s 150 a year. How do you get the right amount of funds into these wallets? How will you get your money out? How will they not be able to track you anyway? As far as I know, you just make the identifiable wallets one hop away.
Again, I’m assuming traditional “old school” non-privacy cryptocurrencies.
There are tumbling services, where you for a fee can mix upp your transaction with lots of other users transactions to make it less obvious you where the one that transfered the credit to your burner wallet.
Kepp in mind, tumblers have also been found to keep logs that ended upp in law enforcement.
Well by design you receive crypto currency in different wallets to begin with and what funds to use, well that's simple - whatever wallet has enough cryptocurrency to cover the transaction.