If I want to use a browser extension I don’t trust but limit its activity to certain sites only is it possible?

If I want to use a browser extension I don’t trust but limit its activity to certain sites only is it possible?

If I want to use a browser extension I don't fully trust but only on certain sites without sensitive information, is setting 'Site Access' to 'On Click' enough?

Would this ensure the extension only operates on the sites I choose, without posing a risk to sensitive sites (like banking sites)?

Or could the extension still find ways to compromise my security?