Welcome.
Skoove and Simply Piano and the other App of the well know trio Flowkey all are aimed at teaching people to play Piano which is a bit if a different technique to playing a keyboard.
A digital piano such as one from Yamaha, Casio, Korg or Roland should fit your needs. Select one that meets your budget and come back to use with what the budget is and we can be more specific.
I have a Yamaha P121 which has 73 hammer action keys, these are similar to what you would find on an acoustic piano.
My P121 is connected via a standard A to B USB lead (the type used to connect a USB printer) to a genuine Apple Camera Adaptor which plugs into the Lightning socket on my iPad.
Once plugged in and powered on it just works. When I bought my Yamaha it came with three months free use of Flowkey which did not need any setup, it simply worked.
Other manufacturers also offer free periods using an App and each manufacturer has their own App that interfaces with its digital piano.