u/Illustrious-Tie-6202

I was gifted this Meyer plants and have it for a year. I have noticing this yellow spots growing it. But could not find anything about this yellow spots on it, plus it has these black spots on underside of the leaf for some reason. Which is perfectly underneath each individual yellow spots.

If anyone can please tell me what is wrong with my plant, I would appreciate it. I also started using neem oil on it during sundown, but nothing is happening. I even add fertilizer recently and I have seen it get more greener a bit, but no new leaves. I even used a plant app, but that app just said add more fertilizer to it.