Please help me, Pros!

I was out of town for four (4) months, with my '06 Toyota Corolla parked unused all through the period. The battery terminals were disconnected.

Upon my return, I first struggled with the dead battery but I was able to resolve it. The main concern now is that, when I shifted my gear to drive, the car was supposed to move (an auto transmission). There was no movement, I pressed down the throttle pedal, the engine revved up but nothing on the speedometer. The car was not moving. I changed the gear to reverse and it was the same thing. After a while, the reverse was picking gradually but the grip was not enough.

I am sensing that something is not gripping well when throttled. The car is struggling to pick the message from the gear-shift.

Everything was working perfectly before I travelled. Please advise me.

My bro scan d car first, after scanning I will know d next line of action