How to get 1 hour of coaching call?

Hi,

I'm in the process of developing a product and sometimes I just don't know how to implement something related to the architecture.

How would I go about finding professionals with a deep understanding

• Software Architect
• Database Architect
• Security/DevOps AWS expert

And book a 1-hour call to ask all my questions and get feedback.
I'm looking for free and paid options.

For now, I thought about contacting people on Upwork. Other freelancing sites look like I would spend a long time booking a call.

I also need this to be quick. I would prefer if I can get in a call in less than 24h... maybe I create relationships with these people so it is easier to get in touch