TikTok
Lucky TikTok handle calculator
Paste the handles you are choosing between. Letters are read in Chaldean numerology, digits in Lo Shu, and the result is scored against your own chart rather than a generic lucky-number table.
Handle changes are not free
TikTok limits how often a username can be changed, and every change breaks every link anyone has ever shared to your profile. That is the real argument for picking carefully the first time, and it is a stronger argument than the numerology.
The number is the tiebreaker, not the brief
If two handles are equally available, equally spellable and equally yours, the tradition gives you a reason to pick one. If one of them is much better as a name, take that one. A page that told you otherwise would be selling you something.