Pilotday.
When you know what the heck you are talking about, please come back. The commit to destination is perfecly acceptable policy, makes sense. Read it and grow a pair is my humble suggestion habibi.
I would suggest this had nothing to do with this situation. Looks like a standard, hold for a bit. Make an approach, no that wasn't good. Another runway, no chance sir from ATC. Wx situation crap.
OK lets divert. Getting near the alternate, fuel looks tight. Initially declare a PAN, when it looks like you
may land with less than final rsv. Then declare a Mayday if it looks like you
will land with less than final rsv. Thats standard fuel policy habibi.
Looks like it worked well. Not an easy day at the office, but job done.
SyB