why does my uti keeping coming back

i have a way to getting rid of my uti in an hour

by sitting on the toilet and drinking lots and lots of fluid till i feel like it’s gone

but this time that didn’t work

i thought i got rid of it but then the next day it was back

i got rid of it and again in a few hours it comes back

it’s been like this for almost 5 or 6 days now where it keep coming back

and it’s really uncomfortable and a bit painful

what might it be from?