Okay king wtch. I don't like your grammar, how you mix up words, and how you hardly ever press the shift key (which I can understand if you're from a different country or have 2 fingers, but even then...), and how you're posts are unreadable to most human beings, but I'll help you.
Feebas is only found in 6 random tiles throughout Route 119. I'll say it again: Route 119, West of Fortree City. These tiles are said to be determined by the "Trendy Phrase" in Dewford. So, the only way you can find Feebas is by fishing in every single tile a at least once until you get a Feebas. If you can't find it go back to Dewford and change the phrase. You just have to be willing to fish on every tile a few times in order to get Feebas. It's simply luck of the draw. So good luck, you're gonna need it...
With all regards,
-ChrisTom