Too many speakers fall into the trap of believing that they are expected to be the smartest person in the room. Or at least the smartest person on the subject matter.
It is this type of thinking that puts too much pressure on the speaker.
Yes, when the spotlight is on you, people are looking to you for answers. But they don't necessarily expect you to have all the answers. In fact, sometimes the best way to gain authenticity is to simply admit "you don't know the answer, but you can find out"
The speaker who tries to bluff, or assumes they have all the answers is usually the last one asked for an opinion.