Quote Originally Posted by Michael R 1974 View Post
If you find yourself always needing high contrast filters, first do some darkroom tests for things like safelight fog or enlarger light leaks, make sure your filters aren't faded, etc. If everything checks out and your paper and developer are fresh, then you're simply not getting enough contrast in your negatives. Try increasing negative development time. Monitor temperatures. Make sure you are agitating enough etc.
I second Michael's recommendation to check your safelight. Please consider using the Kodak test, and not a "coin test" or its variants. It will only take 10 minutes.

Unsafe safelight that does not fog paper will reduce contrast and it will force you to use excessively hard contrast filtration, in addition to causing other issues with print-to-print consistency. Second to that would be checking your enlarger for significant light leaks.

I would say that 4 our 5 darkrooms which I have visited had unsafe safelights. All the other suggestions, which you got, are pretty good too.