No Water Out Of My Fresh Water Low Point Drain Valve

Maybe you left the valve open after draining in a prior year, then bugs like to make nest up in the pipe/valve.

If you can get a pipe wrench on the valve take it off and see if you can clear the clog. I have a 5th wheel, not a truck camper, and my drain valve is easy to access for removal/cleaning.

I use to leave the valve open after winterizing but I learned to close it.