literally not how it works. most places require voter intent. meaning only votes people meant to cast count. if a voting official notices that a person named Literally Anybody Else won by a write in, they'd go through all the ballots and make sure the ballots literally say Literally Anybody Else written out validly like a name. those in who they aren't sure of would require another election official to track down the voter and ask for their intent.

source: worked in the ballot counting process of a country. they literally have teams trying to decide shit like if you filled all bubble on scantrons, but circled one of the bubbles, does that count as intent? does it count as intent if they circle all the bubbles but not fill any of the scantrons bubbles? and yes, they count the votes even if they don't follow scantron directions but clearly demonstrate intent. i.e drawing arrows with a thing saying "this one!" next to all the bubbles you want may count as intent.