Depends, did you get a denial from USCIS for missing your appointment date?

Change of status occurs inside the US. No, you cannot go visa stamping. B to F change of status is taking 20 months or so. Should you depart the...

From your facts, yes. Adjusting as an immediate relative of a US citizen waives any related issues to being an overstay. Good luck.

Upon submission, that is your status.

It’s likely that you did not submit an 864 WITH an 864a, and likely submitted everything incorrectly, from what I understand. If your brother has...

You were in removal, proceedings have been terminated, you are no longer in removal. With no other facts or context, no one here can tell you any...

Yes, it is possible. Read the USCIS website carefully on how to proceed and where to file the I485 with a pending I-130. Discuss with an attorney...

Likely sufficient for initial evidence; can also look at "Any other relevant documentation to establish that there is an ongoing marital union." ...

There is no affidavit of support for an I-751; unless you mean you are submitting a sworn statement as to the bona fides of the marriage related to...

Would depend on reason for denial, which is not mentioned.