I read that you looked with a magnifying glass, but chances are that it is not strong enough to see fig bud mites. They are microscopic, the literature says use at least 30x. At 40x they are visible but still too small to make out many features, it is mostly movement that gives them away. They are not shaped like typical mites either, they are elongated and blend into the forest of trichomes on the undersides of young leaves, for scale, their bodies are about as long as those trichomes are wide.
The mottled leaf in the 3rd pic resembles fig bud mite symptoms. There is bad information distributed online by universities and others who do not make any attempt to distinguish between fig bud mite symptoms and FMV. Their microscopic size and confusing symptoms makes them insidious and a formidable threat to your upcoming season if they go undetected. Best of luck with it, I can't say whether you have them or not but thought you would appreciate the warning.