Q: How to darken highlights?

Thank you Alchroma, I learned the technique, but unfortunately it seems the sunlight is too bright in the original footage so there simply seems to be nothing but white there. I only manage the get my highlighted spots either almost black or just as overexposed as before while the rest of the image neatly changes.

Thank you very much, I at least learned this technique now which I will use in other circumstances.

Thank you Martin R, but I think it only works with Final Cut Pro.

Good, I will check it out but I think my areas are simply too overexposed, seems to be no iformation about colors there, but I will give it a try.

I tried it, the app works fine like you said but the areas I wanted to correct are just too blown out, completely blown out even, there is no information in there.