How do I fix my keys, I spilt acetone on them?

I spilt some acetone on my keys a few months ago and my computer is working fine no tech difficulties, but it obviously dissolved the glue and it’s really hard to press down on the keys now and 2 of them fell off and more are loose/ wonky and not fitted right now, some of them are fine, the computer wasn’t used very much so it’s not a big deal, but i was messaging with a computer repair shop and i think he’s saying i need a whole new keyboard, but i think the keys just need to be replaced along with the glue, i don’t know how computers work but the man was asking what color my computer is and i don’t think he’s need the colour if it was just the generic keys that he was fixing? or am i dumb and is there no difference between a new keyboard or new keys? please help!! it’s a acer notebook computer, model number N20H2, in pink. thanks very much!!