how to check dynamic Condition On Dynamic Table using dbContext

Question

I'm new To all Of this in my project i use dbcontext and generic Repository along .Net core 5 and dotnet frameWork 5.0.17

now here what I'm traying to do is Store a Condition in string format in sql server like

Employee.Id==2

in my mind 1st of all I must retrieve Employee then with help of predicate apply condition in where clause
and I'm stuck in find solution for 1st step any hint or solution is appreciated.