I cannot figure out why I’m getting fret buzz

I put new guitar strings on(same gauge and one at a time without taking them all off) and immediately get buzz on open strings and while playing. My action seems just fine as it was perfect before I changed my strings and intonation shouldn’t matter yet. The last thing I can think of is the bridge but then again it seems it’s all pretty high. I’ve read that the truss rod won’t matter if the strings are buzzing while open as well so I don’t know what the likely culprit is.

I put new guitar strings on(same gauge and one at a time without taking them all off) and immediately get buzz on open strings and while playing. My action seems just fine as it was perfect before I changed my strings and intonation shouldn’t matter yet. The last thing I can think of is the bridge but then again it seems it’s all pretty high. I’ve read that the truss rod won’t matter if the strings are buzzing while open as well so I don’t know what the likely culprit is.