For me, a very simple "breakdown tasks into a queue and store in a DB" solution has help tremendously with most requests.

Instead of trying to do everything into a single chat or chain, add steps to ask the LLM to break down the next tasks, with context, and store that into SQLite or something. Then start new chats/chains on each of those tasks.

Then just loop them back into LLM.

I find that long chats or chains just confuse most models and we start seeing gibberish.

Right now I'm favoring something like:

"We're going to do task {task}. The current situation and context is {context}.

Break down what individual steps we need to perform to achieve {goal} and output these steps with their necessary context as {standard_task_json}. If the output is already enough to satisfy {goal}, just output the result as text."

I find that leaving everything to LLM in a sequence is not as effective as using LLM to break things down and having a DB and code logic to support the development of more complex outcomes.