Need a bit of help for my diet

I have recently started going to the gym but as the diet makes most of the result I would like help in that.

I want to lose weight for starters and also get a lean athletic body.

But here's the thing, I don't eat non veg and eggs everyday, I only eat those on Wednesdays, Fridays, and Sundays. (Personal reasons). Also I am in India and live in a hostel as I am a student so my diet mainly consists of the generic hostel canteen food which is not that nutritious to begin with but I generally make do by eating less of the oily food and more of the rest.

I want a diet in which I can get my macros in with these restrictions, if anyone is willing to help then please do.