Adult thrips can look like small black flies. But they aren't attracted very much to the yellow like other flying insects. Their favored color is blue. Blue stickies can help identify a thrip presence as they can be very hard too spot. But by no means are sticky traps a good eradication method.
I'm on the road right now, but I can take a picture later and send it to you, if it's really thripse I should buy and use nematodes, have heard they should be very good against thripse
In the second pic bottom right leaf I see what appears to be 2 small bugs. If your symptom is stains and Marks I'd guess thrip nymphs. But without a clear view hard to say. Take a good look on ur leaves for bugs. The undersides of the leaves is a favored hiding spot for cannabis pests.