Can I spot-reduce fat?
Not in any reliable practical way. Training a body part can build muscle there, improve shape, and increase local strength, but fat loss happens systemically. Your body decides where fat comes off first and last.
That means crunches do not directly burn belly fat, triceps exercises do not directly remove arm fat, and inner-thigh machines do not directly remove inner-thigh fat. Those exercises can still be useful if they build the underlying muscle.
Use the right tool for the job: calorie deficit for fat loss, resistance training for muscle, and time and consistency for regional changes to show. Stubborn areas often just need more total fat loss, not a special exercise.