i am new to llm assisted coding, but i dont like the way it try to add more stuff when fixing thing, instead of going simplest less code possible, it recreate bunch of already coded logic, it also mostly try to code workaround and accumulate spagetti-esque codes. any advise? appreciate it

Tell it to stop?

By this I mean give it precise instructions and ensure the instructions are always included in the context window. You’re responsible for managing the agents effective working memory, if that analogy makes sense. If you don’t tell it the way you want it to act, it’s effectively a blank slate.