Please help 😫

Br

I need help BAD. My 5 year old just can’t get the hang of wiping is butt 😫. And I know it won’t be perfect for awhile. But y’all, if I let him try on his own, he gets it on his hands, in his finger nails, on the toilet seat, THE FLOOR. Yes, he uses wipes and we’ve tried toilet paper. No, we can’t get a damn bidet🙄 that’s not gonna actually help him learn for at school. I’ve showed him how over and over, explained how to fold it, let him practice in front of me over and over for the past year. He just doesn’t understand! Idk what to do!!