Detailing Noob

Ok, hopefully someone can set me straight because I’m not exactly sure what I did wrong.
I’ve been experimenting with detailing for the first time. I used a dual-action polisher with some Chemical Guys scratch and swirl remover on the roof to get what I thought was some oxidation. It worked great on the trunk lid, but it left these white areas on the roof. Confession: I did this in the sun. So could this be polish residue that dried to quickly? Or did I somehow make it through the paint and cause damage? I’ve tried more polishing, regular washing, and rubbing alcohol to remove it but the spots won’t go away.
Advice?
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To me it looks like very heavy oxidation, or the start of clear-coat failure. How did it look before you started polishing, and did the trunk lid look the same? You may be able to get it out by spending a bit more time polishing. But given you said you wiped it down with alcohol, all the remaining polishing residue should've been removed.

It looks like the clear coat is damaged. If a compound/polish won't restore the finish then you will have to take this car to a professional body shop and have them assess the actual condition of the paint and course of action to restore the finish on your roof panel.

When doing detailing, I never detail in direct sunlight. I see you have a garage. I would suggest going forward you use your garage to detail your car.

Good luck finding out what you need to do.

Agreed with everyone else. It looks like clearcoat failure to me. You said that this was already on the roof when you started?

Thanks for the input everyone. The truck lid didn't have any of this "cloudiness", it just had a lot of swirl marks which I was able to improve. The roof did have a bit of this cloudiness before I started. I don't have a great Before photo so it's hard to say if it got any worse because of my work, but I don't think it improved.