My score in gate 2018, 337 and i belong to obc catogery is any better college in low fee

there are many state government colleges that allow you to complete your masters of technology in comparatively lower fees than that of the private colleges. But never worry as you will get 12000/- stipend per month as a subsidiary fee to carry out your fees which will help you a lot so financially never feel unsecure as there are a lot of options to fund your studies in that of the institutes funded by the government of India

just try for the Top class IITs like IIT Delhi Kanpur madras Kharagpur etc and many more you can also go for the top NITs as that is also reachable with your marks.