WHEN I STEP ON GAS, IT VIBRATES THEN SLOWLY TAKES

if you are getting a grinding sound or feeling then your brakes lining is gone and you are down to the metal. you need to fix this asap the longer you drive and use the brakes the more damage you are doing to the rotors.

From what you say Daniel, your kickdown cable need's to be adjusted, here's how :

Down at the pressure lever on the front of the trans, loosen off the cable retaining nuts so there is a little slack in the cable.
then start taking the slack out of the cable a little bit at a time;
Rest a long screwdriver on the end of the pressure lever, holding the screwdriver with one hand start opening the throttle with your other hand.

Just at the point the idle RPM barely rises, the pressure lever should just barely move.

Driving test; Going along a level road at 25 mph light throttle, floor the gas pedal.
The trans should downshift to first gear.

repeat the same drive at 28 mph, floor the gas pedal, the trans only downshifts to second gear.

don't to forget to have the fault codes read first and get a reading of the fuel pressure

Have you tested the throttle position sensor?

Likely you have a drive line issue. Universal joints and Constant volicity joints are suspect.

i really recommend a trans service/ band adjustment to correct your problem before you go thru another trans, almost sounds like a problem with torque converter being out of balance/ damaged...

try replacing the fluid and adding some LUCAS brand stop slip to the fluid also check the transmission mount and motor mounts

is it manuel or automatic? sounds like internal trans gear problem. gonna have to bite the bullet and take it to transmission shop

If it is a 5 speed your clutch is slipping. If it is an automatic the clutch pack is bad or torque converter problem.

you need transmission fluid and your axle is broken