There's alternatives like glufosinate and paraquat. The fellas that farm the land next to mine use atrazine in the soil as a preventive measure. When my father grew corn, wheat and cotton ages ago, he used atrazine as well. Organic operations use vinegar and iron-based stuff from what I've been told.
as a place that stopped using glyphosate: suffer, and chug a lot of gas manually chopping up weeds instead... you can supposedly exhaust weeds by just killing them constantly, but you wouldn't know it from how they spring up after rain constantly, and the tall ones are just being replaced by crawling vines anyway.