Here's another picture.

Yeah looks like Triv, which is tougher to remove. Where did you get your seed? Was it a sun shade mix? I read on another forum that Poa Triv is added for shade tolerance in some big box store brands. Tenacity will whiten Poa Triv but not kill easily, I don't think. Is that all you have? If yes dig it up with weed removal tool and get every last bit of root. if you have turf type tall fescue do not use Certainty , you may need Velocity which recently became available for residential use.

Fungi are a fact of life. There are over 100,000 microbial species in your soil of which a very large fraction are fungi. As gardengal said, you will never be free of them and you don't want to be. Whether they are creating mushrooms is something else. You can minimize the mushrooms by proper watering. Watering: Deep and infrequent is the mantra for watering. This is for all turf grass all over the place. Deep means 1 inch all at one time. Put some cat food or tuna cans around the yard, and time how long it takes your sprinkler(s) to fill all the cans. Memorize that time. That will be the time you water from now on. My hose, sprinkler and water pressure takes 8 full hours to fill the cans. Your time will likely be less. I like gentle watering. As for watering frequency, that depends on the daytime air temperature. With temps in the 90s, deep water once per week. With temps in the 80s, deep water once every 2 weeks. With temps in the 70s, deep water once every 3 weeks. With temps below 70, deep water once a month. Note that you have to keep up with quickly changing temps in the spring and fall. This deep and infrequent schedule works in Phoenix and in Vermont, so it should work for you. The reason for deep and infrequent is to grow deeper, more drought resistant roots and to allow the soil to dry completely at the surface for several days before watering again. If it rains, reset your calendar to account for the rainfall.

they do not flower nor look like there would be any buds of any type. I am worried to pull as i've heard some of these invasive weed hyper activate/grow when their root is pulled. not sure if that is true or not. Thank you for your response though.