Hello, someone can please tell me how i can start make a drift insim, i don't need lapper but insim, what do i need for start? Sorry for bad english

First of all, do you have any knowledge of coding in any language?
If not, you won't be able to make any insim application.
If you do have knowlegde, search the forum for a basic script to start with or totaly start from scratch using the insim documentation which can be found in the LFS doc folder.
In case you don't want to go through all the trouble of building your own insim, grab one of the insim application which are already made and shared on this forum.
There are several very useful and powerful insim applications around, like Lapper, Aerio (I might have written that wrong, as I keep forgetting the correct name), PRISM, etc.

And if i wanna insim, i need c# and?? Because i know about lapper to much, i search for lapper codes try all time but don't finde nothing how make when drift pts or angle all time changing in drift time

Could be any C language, but there are other languages like .NET you could use too to write your insim.
If you aren't a skilled coder (or maybe not a coder at all), I would recommend you to download Lapper and get skilled in that program.
All the hard work is and will be done in Lapper, so you only need to code buttons, actions, storing variables, etc. etc. which is easy to learn and once you have mastered it, you can build almost everything with it, inside the Lapper environment.