Row Level Security - FALSE() to restrict table data

Hello all,

I have tables like Accounts, Opportunities, Leads primarily.

I am working on a security model where few users are not supposed to see opportunities data but can see Accounts data. I have some logic built on row level security for Accounts as per business requirement and that works fine. However I added =FALSE() against Opportunities table hoping the user will not see opportunity data. But the users are still seeing the data in opportunity table.  More Info - Opportunities are related to Accounts.

Please help me with your thoughts.

Thanks