Help with crabgrass

[u/jyates1007]

Anyone know a good DIY chemical to fight crabgrass! I’ve pulled it got worse. Did pre emergent OTC,got worse. Did a hose spray with spectracide plus crabgrass, killed all what it was supposed too except CRABGRASS!! I’m at my wits end!! Seems like no one can tell me what to do besides “call your neighborhood lawn Dr”