On Sun, 29 Jul 2018 11:24:48 -0700 (PDT), wrote:

After flushing my toilet bowl doesn`t completely empty. It1s one of those 2 gal. ones. oh!! for the good ole days. What can I do to fix it?

See method 3 he https://www.wikihow.com/Fix-a-Slow-Toilet

The rim jets need to be cleared of minerals so the initial flush
creates a vortex swirl.

IF you have iron sewer pipes, neutralize the acid with baking soda
before you flush.