RPM & Speedo Rushing Automatic slipping no power

[iftekhar.frt]

About 4 Days ago I flushed my ATF using Keiren`s Guide. I think the the amount of fluid that went in was 11Liters. Put in a new AT Filter(screw in type) and reset the ECU . have driven around 270-300 KM till now . Checked the fluid level today with the engine running transmission in N when COLD and it was very slightly less than the marked line on the dipstick

The Fluid That I used was Lique Moly Top Tec 1200 and also added the Lique Moly ATF Additive

https://www.europaparts.com/liqui-mo...0-1-liter.html
https://www.amazon.com/d/Transmissio...ive/B004X63XVU

But the car has been acting really weird since these 2 days. Abnormal Shifting A LOT of Slipping I mean A LOT of slipping
I would not say that the slipping has started to happen since the flush only it has been happening prior to changing the fluid that is why i did it in the first place

The speed gauge is also rushing. There is no wheel slip at all so i wont say the speedo is jumping because of wheel slip

The most dramatic change is when in Reverse there is almost no power

the car is doing 0-100 Km/h in around 10 Seconds

i would be really helpful if you guys would take the timeout and help me. I am also attaching some videos

I am new with this car so really scared right now and its my daily driver also.

https://drive.google.com/file/d/1BYb..._3epOqL91/view
https://drive.google.com/file/d/1mDB...h9A97k0K_/view
https://drive.google.com/file/d/1k-4...qKal9H4lo/view
https://drive.google.com/file/d/1gho...eLVmH8TM4/view