Is there any simple keyboard that works properly with realme or oppo which is like traditional keyboard in dumbphones? My mom doesn't like qwerty-style, she's been using the traditional style for over 18 years and insists she's too old to re-learn.

As it is now, we both have new mobiles, an oppo and a realme pretty much the same lower middle level class of mobiles - so if there's a keyboard which works properly with oppo but not with realme, my mom gets the smartphone which accepts such a keyboard.

Any idea what to look for? I keep downloading different keyboards but it looks like all are qwerty-style.

by non-qwerty do you mean azerty, Maltron, Colemak, Dvorak...? Gboard should do
sorry if i dont get you

The type my mom likes is called 3/4 keyboard.
It's the basic version that old phones had.

Found this via a google search:

https://play.google.com/store/apps/deta ... n_IN&gl=US

Just what I was looking for, thanks.
There are many keyboards but most as I wrote in my first post come with qwerty style, I had no idea which one could work and checking every keyboard in existence could be a very impossible task, as every day many new apps appear in store.

Try Typewise Keyboard
https://play.google.com/store/apps/details?id=ch.icoaching.wrio
You can also get it from Mobilism....

Very nice, very clear but no 3/4, which is unfortunate. Will try the suggested simple style, for now with ads, just to see if ny mom likes it. If she does, will check if the same keyboard is available without ads.

[rdrnnr]

This layout is called T9 keyboard
You can check this out
https://m.apkpure.com/perfect-keyboard- ... ctkeyboard
There's also
https://play.google.com/store/apps/details?id=net.cdeguet.smartkeyboardpro
And
https://play.google.com/store/apps/details?id=com.akeyboard

This layout is called T9 keyboard

This is rather odd. I checked and in every Polish source there's a distinction, the layout is 3/4 and the utility that suggests words is "słownik T9" which literally means "dictionary T9". I translated it into English and got this not-quite-right result. Maybe my mistake is the main cause of me not being able to find what I was looking for. I'm grateful for your input, now I must check again but at least there should be some proper results. Ah, well, this is what happens when a female user doesn't know what she's doing...