i wish i had the money and time and ability to just tear up all the grass in the backyard and do it all over bc holy shit is it bad
Depending on size of lawn it's not terribly expensive nor is it particularly difficult. Definitely time intensive though. I did a full kill and reseed on about 1K-1.5K sqft last year.
You'd also be surprised at how much better you can make a lawn just by buying 1 or 2 bottles of herbicide, a bag of preemergent, and a bag of fall fertilizer. Aaaaaand a bag of decent grass seed to put down after you use the herbicide, to fill in the space vacated by recently killed weeds.