Small Evap gas leak- replace or keep looking

What is your question?

The check engine light came on, I ran the codes- and indicated an evap leak. So 2 most common problems are the gas cap and the purge valve. I inspected and tested both, using procedures found on YouTube, and I believe both items are ok. Question is- for anyone who has had this before, do I go ahead and replace both parts- 1 at a time to see if it resolves it- or should I inspect the gas lines, from that purge valve to the gas tank. Even though I believe both parts to be ok, is it possible that they are not ? Are there any other parts to check ? Any other suggestions? Id rather fix myself, than take to a mechanic, shop.

What makes this problem better or worse?

no real symptoms, just check engine light

How long has your 2019 Chevrolet Trax had this problem?

About 3-4 weeks