i probably agreed to 'smart' something, long ago for spellcheck and others. they've expanded those options a lot. i no longer need google spellcheck. firefox since the chrome went downhill
never wanted to use side-load on a g-phone. get a different os and we'll talk. likely enable it in dev options because of it's preexisting warning/disclaimer.
https://www.youtube.com/watch?v=RrKKt6NprVM&t=179s