changing manual to automatic

comparing of swapping the transmission and learning how to drive a stick
shift, then the 2nd task is easier. At least, you gained your knowledge of
driving a manual.

Swapping, techically, you can but in reality, it would cost you more than you
could expect. In short, it would be your headache (even worse, your nightmare)
, if you are not an experienced mechanic and do the swap by yourself.

If you still want to drive the automatic, then simply trade in to get the
right one that suits best to your needs.
If you want to learn how to drive a stick shift, then go for it.
If you want doing the swap, you can gain some knowldege during your swap too.
All depends on what your priority is.

Good luck!