Will this product ever be consistent?

I am so tired of ChatGPT randomly degrading. The custom GPTs I made no longer function how they used to and half the time they don’t work at all. I can’t even generate a random excel file in ChatGPT with GPT4o.

How are we expected to build this product into a workflow? Can I at least have the option to build custom GPTs with GPT4 and not GPT4o?

If this random degradation continues to happen I might as well start looking for another job because the number of complaints, emails, and phone calls I’ve gotten today is ridiculous.