You can post them here PRs ready for review _ where I check every day or directly request a review from me.
The count does not matter, more the knowledge of the people reviewing. It is totally fine if someone merges things straight away and there could be PRs which have 5 approvals but that have still major technical problems.
No one but everyone who has merge rights could merge it.
No, they don’t otherwise their review would be green.
It is basically: someone comes around and thinks it is mergeable and merges it.