Block-explorer tools and websites
Do not use this. If you try to find something there, you are only giving away that you have done something there by trying to find something.
Imagine who is looking for a specific transaction? Even in other block explorers! Who is searching for a transaction or the details of a transaction at this point in time? Of course, most likely only someone who actually has something to do with it.
Operate your own fullnode and, if possible, refrain completely from researching transactions on third-party websites.