I need help diagnosing a issue

What is your question?

I’m not sure what is wrong one day I was driving and it felt like out of no where it was slipping gears I was loosing acceleration even tho my foot was on the ground and it only would start accelerating when I was redlining the rpm all while the speedometer is bouncing back and forth then I get home and the car sits for a second off when I turned it back on it would not shift I could go to park and neutral after playing with it and topping off the fluid it went in reverse one time after that it was back to neutral and park

What makes this problem better or worse?

Nothing

How long has your 2008 Ford Focus had this problem?

A day