google sheets – Conditional formatting to check for error in filling out the spreadsheet

I need to know if the columns were filled in correctly, for example:
A must be in text format;
B must be in finance format;
C must contain such terms (a,b or c).
I thought about doing this control through conditional formation, but I’m not sure how I would do it, is there any formula I can paste in conditional formation so that this happens perfectly, signaling an error in the way the cells were filled?