When dealing with Europeans, you have to look as them as one family ran by a collection of princes all competing with each other to become king. They will side with the non-European only as much as it benefits their own ambition to be king, however if the entire European kingdom comes into question, they will drop all their differences and unite against the outsider.
In Syria there were many times where the US/Russia moved in unison together against Turkiye. They will fight/compete with each other, but when an outsider enters the game that challenges the entire outcome they become family again.
So any euro-origin side supporting Palestine is either playing good cop, meaning pure deception to fool the Muslims into thinking their is not a race/religious war taking place against them. Or they have different interests in the middle east and they don't want to see the Anglo-American princes dominate it at their expense. In 99% of cases when euro-origin powers talk in support of "Muslims" its either self serving or a deception.
Keep in mind that in the entire western world a dehumanisation campaign has been taking places against Muslims relentless in their media, part of that agenda is so when muslims are genocided as seen in Gaza, it softens the impact and makes it seem normal and acceptable. Allowing the euro-origin powers to pursue their geopolitical ambitions.