By the way, there are many threads here already on switching a ball python from live food to pre-killed...I hope you'll consider doing just that...it should be
fairly easy, judging from the appetite your snake seems to have.

When you tried feeding f/t, how did you thaw it? -warm it? -offer it? Do you have feeding tongs? (get some, they can be professional "giant tweezer"-type
or even a BBQ tool with rounded -safe!- ends) It may seem easier to just feed live....until your snake gets injured...prevention is way better than trying to fix.

One thing that seems to work great for everyone is using a hair-dryer (blow dryer) to briefly warm up the prey RIGHT before it's offered, so the snake responds
to the body heat as if it's alive. If you do this right, when your snake is hungry, preferably in evening hours, using tongs to slightly wiggle the prey (but without
appearing to approach or chase the snake with it...you want it to look to the snake as if the rat just happens to be strolling past, not towards, the snake) and if
the prey has the right heat signature to the snake, your snake is very likely to take it...I hope you'll give it another try.