i attack to iron golem, iron golem doesn't attack me but i in survival mode ,hard difficuty

I am in Minecraft 1.21.3 .i attack to  i summoned iron golem but iron golem doesn't attack me. I am win a raid and get hero of the village 4,difficulty= hard. survival mode and don't cheats enable. after i winning raid i am trade  a very very very very lot with villagers. i think this is a bug.  please solve this issue. this is same in other worlds