Why hasn't UE5 been improved so far

Every time a new model needs to do bone redirection again and add a controller, which is very annoying. (even the same bone)

Why can’t we launch the function of fast 3D conversion to 2D style? I believe it is not difficult to make this function with their technology.

However, every time you render in 2D, the process is extremely cumbersome.

I’m just a novice and want to use UE5 to do CG, but I find it is more troublesome than other software, and I almost crash.