That's one of the thingsI like about the Logitech Keys To Go:
https://www.amazon.com/Logitech-Super-Slim-Super-Light-Bluetooth-Keyboard/dp/B08K3SD7NZ
Kinda integrated stand and can do portrait.... it's definitely a little unstable, so you have to be very careful when / where you put it in portrait, but on a desk or table, it's great.
Not positive if I'm going to keep this keyboard yet, but I do like it a lot.
Otherwise I agree; just get a stand.
I got a pack of these & absolutely love having them all around the house, office, in each of my bags, etc.:
https://www.amazon.com/Universal-Pocket-Sized-SourceTon-Compatible-Cellphones/dp/B074J5BGBK/
If you shop around more, I think I got a 12-pack for about that same price...
Nifty little stands for iPhone & iPad mini.