There are studies widely available just regarding health (0). The other reasons are equally valid if not moreso (1,2)

0. https://jamanetwork.com/journals/jamapediatrics/fullarticle/...

1. https://www.med.upenn.edu/CEP/assets/user-content/documents/...

2. https://healthpolicy.usc.edu/article/mandatory-masking-of-sc...

Do you see those big letters in red in the back saying 'RETRACTED' in your first link? And your second one states "There is evidence from survey studies that wearing masks may cause some adverse effects, such as headaches, in school-age children. This evidence is of low to very low quality because of risk of bias in self-selected samples and because of indirectness." The third is an opinion piece.

Boring

You have the problem of assuming that the studies in which you put all of your faith are even asking the right questions. The reality is that they are not interested in asking the right questions, they are interested in the approved questions.

If you want to adhere to the Thought Police guidelines be my guest.

Doctors' opinions. The opinions of professional, working doctors.

Know that many doctors are being threatened with censure over very reasonable adherence to the once normal standards of medicine.

We have to agree to disagree on what constitutes a valid piece of evidence.

What we don't have to agree on is whether children are at risk, because they aren't, categorically.

Any monies toward protecting children would be better directed in any number different ways, the ways that actually prevent children's deaths