I don't know that this is really a good idea, but if you insist then LM studio is a good tool for local LLMs and has nicely formatted output. Smaller 4B models will probably run fine (they do on my M2 Pro at least). I prefer it to ollama, and it makes tuning the system prompt and temperature easy.
Others will probably have better model recommendations, I am using Mistral and Gemma myself.