I’d recommend trying LM Studio (https://lmstudio.ai/). You can use it to run language models locally. It has a pretty nice UI and it’s fairly easy to use.

I will say, though, that it sounds like you want to feed perhaps a large number of tokens into the model, which will require a model made for a large context length and may require a pretty beefy machine.

I’ve heard that sometimes Steam won’t list the Mac version, but if you buy the PC version you can still download the Mac version. Unsure of how true that is, though.