I got a USB microscope to check if my crown was thinning - is there any miniaturization present in any of these photos?

It would appear there is some degree of miniaturization. However, whether this is due to androgenetic alopecia or some other cause requires a proper history and good examination involving the entire scalp and not just the area shown here. There is redness in the scalp and that too needs proper examination to confirm if seborrheic dermatitis or another cause altogether. Overall, androgenetic alopecia with mild seborrheic dermatitis would be the favoured diagnosis but a proper history and examination is needed to confidently exclude other causes.