As for an alternate, that depends what the reason is. If it's "you hate the name you gave it," chances are veryveryvery slim you'd be allowed to. If it's because your name has a contraction in it (like Don'tfeedthesquirrels or It'sTime) or had an abreviated 'and' in there (SaltnPepper, Hot'n'Cold), your alternate can only be to noncontrationalize...if you get the meaning (Donotfeedthesquirrels, ItisTime, SaltandPepper [or even Salt'n'Pepper], HotandCold).
If it's because your name is problematic, inappropriate/triggery, or flat-out gross (as in to think of, not the name itself), like how *****holeshipping and HelpI'veGotCrabsinmyPantsshipping were, you can have a legit name change (those were changed to Brokebackshipping and Cyamidaeshipping).
If the name is "too long" (like It'sMyBattleAndI'llFlyIfIWantTo), you are allowed a shortening of that name.
All kinds of exceptions, but they don't happen often. So what's your situation?