I scheduled a 30-min meeting and distributed a short agenda before meeting. During meeting, 2 participants out of 4 were male who interrupted me as I was getting into item no.1 and then talked about a different topic for 50 minutes. I turned off my video at minute 45 as the meeting was scheduled for only 30 minutes and I had to take care of something. They then wanted to wrap up my topic in the last 5 minutes and provide me with no info and not acknowledge my agenda. I politely asked that we reschedule my half hour meeting to another day since we didn’t get to my agenda today. They acted surprised and baffled and ultimately agreed. They are part of the same team as me but a bit senior to me and I think see me as a threat even though I’m new to the team. Any advice on how to approach this at the next meeting? And why are all gates to modest power guarded by insecure unethical beings?