Hello guys :)
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Welcome to my jinx guide. Hope it helps.
I decided to make a jinx guide to actually see in the meta and to prove the world that jinx in not weak in early game. This build is very situational and you have to adapt base on your support and also the enemy team composition. It very depends on how you build Jinx. Your build does not have to exactly follow what is given above. But just roughly the main idea of early and mid game. If you survive the early and mid game even if without kills and death. You can still carry your team if you keep having team fights due to the build. So let's get started!

There isn't much to talk about the runes. You can actually see that this runes can be used on most of the ADC and most people are using this. They might change one or two but still can't run from this main idea of Runes. So yeah :D

The Masteries is also nearly same to most of the common Jinx build. Runes and masteries are always nearly identical for each player as we just copy them from the Pro's or the internet.

Basically at the starting of the game it is for you to decide. If you are confident with you switching using Q ability and could poke super super hard without getting overextended, then go brawler's glove. if not farm your way up with Doran's blade. I don't recommend cull on jinx because it's not really ideal on her. Not sure why :D

On first back, it depends on the amount of gold you have. If you can afford a bf sword then get it with a potion to go back to lane. If not, get a dagger with boots and some potion to get back into the lane. Build up till you have Infinity Edge/Bloodthirster and Runaan's. It helps a lot during mid game fights.

In late game is rather situational as I had said so you can refer to the build guide.
If you are far ahead and want to go for something crazy then you can try Guinsoo Rageblade although it's not so recommended to build it in Ranked games but it gives a good AOE damage if the enemy doesn't has single target burst champs such as ZED or Leblanc

If you decided to start with brawler's glove Try to keep switching your q and keep poking from far. Do not go over the enemy minions as they might target you. Just poke and retreat. Keep repeating until your enemy runs out of potion or make a big mistake for you and your support to help. Level up E second to escape from jungle ganks. Due to your poking potential, there is a high chance the jungler would come and gank you. So keep wards on at the river