It can be difficult to track Bitcoin transactions when people use various wallets and Bitcoin mixers. These factors disrupt the search process and take up a lot of time.
Despite the fact that it is challenging for users of a Bitcoin wallet to conduct transactions completely anonymously, there are several ways to get close to anonymity. For example, it is possible to use a cryptocurrency mixer.
In this case, it is a Bitcoin mixer, which ensures that it is more difficult to make Bitcoin traceable. This is done by mixing BTC transactions from different people together in a pool, then sending the transactions to the intended addresses.
In addition, wallets can also be very difficult to monitor. If someone does not want their activities on the Bitcoin network to be traceable, it is possible to create a sort of smoke screen. By creating many crypto wallets and carrying out various transactions between these wallets, it can be more difficult for anyone to trace transactions and wallets.
Both challenges are difficult on their own, but combining them can make tracking Bitcoin addresses a lot more difficult. Tracking transactions and wallets will take an enormous amount of time and energy.
Source: https://cointelegraph.com/explained/are-bitcoin-transactions-anonymous-and-traceable