Irises bloom every year but need to be separated. Crabgrass is so thick it is hard to do so.
This can be difficult to do, but a selective crabgrass herbicide will do the trick. Just make sure to treat the current grass, and use a pre-emergent for the seeds before they pop next season.
https://www.gardeningknowhow.com/plant-problems/weeds/crabgrass-control.htm
If you want to do this without chemicals, then I would suggest using boiling water to kill the whole area and start over! You may have to do this a few times over the course of a week, but it will kill off all plants and pests in the soil.
https://www.gardeningknowhow.com/plant-problems/weeds/boiling-water-and-plants.htm
My lawn only has about 5% crabgrass that i want to get rid of.
Please use spaces between words. It can be difficult for others to read. I will fix it for you this time.
This article will help you to get rid of, and keep away, Crabgrass:
https://www.gardeningknowhow.com/plant-problems/weeds/crabgrass-control.htm
The wide-blade grass is growing on the left side of the attached photo.
This is going to be a difficult one. I'd say your best bet will be to take samples up to your local extension service. This link will help you to find the closest to you: