'Complex Query in Mongodb using driver (subtraction of dates and mod)

I want to write a Query like this:

Builders<Test>.Filter.Mod(s=> (s.StartDateTime - requiredDate).Days, s.frequence, 0)

this is not working.

Also a query like this:

s => DateTime.DaysInMonth(s.StartDateTime.Year, s.StartDateTime.Month) - s.LastDays < requiredDate.Day

This is not working too.

Both are giving me "Not supported" error.

Is there any equivalent way of querying such thing?

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