Retake the sat or the act, practice first to see if a 1450 is even possible.
But your odds are even lower now than they were last year.
If you don’t have a MAJOR achievement (like leader of z national youth group, first prize in science or math…, etc) odds are almost zero.
Your major is good.
Use Parcoursup to try and transfer either to a prepa ECS, MPI, or an IUT which will offer a more personalized education. Since you don’t like big cities, choose smaller regional cities like La Rochelle and Chambéry.
What’s your budget? Could you consider TWENTE’s ATLAS program? Scottish universities? Abertay still has places for year 2 entry, others might still.