Here are examples I would accept as reptilians outside of physically see one.

• DNA evidence
• historical evidence like bones and culture of these reptilians.
• basically anything physically and directly attributed to a reptilian and noone else.
• if you had a peer reviewed study showing they were real I would not write it off, I would review the study and see if the srudy was experimental or nonexperimental, I will also check to see what logic was used and how it was measured.
• you had an experience, you believe it was real. I get that but that's not evidence. Just as an insane person who thinks that they can fly and belive it fully, doesnt mean that's reality. In the end you need a physically method to test in order to prove it to be reality without that, there will always be a high probability of it being delusion.
• again your analogy of you giving me a microscope is a poor analogy since you want me to measure something subjective not objective.
• if someone believes something, even if everyone but someone believes something it doesn't mean it's true or reality. Let's flip it, you see that most people don't believe what you believe, you should understand that just because we don't believe it, doesnt mean it's not true right? So believe isn't evidence.
• regardless of tools, is there anything, anything at all that is physically in this reality that can me measured which shows the existence of reptilians? Or is it strictly, mental, non-physical/spiritual?