I think that it might be more of a perception issue.
It's natural that your colleagues would be worrying about you and helping you in meetings. Which is a good thing, because they are being supportive and helping you with your role. Instead of seeing it as a terrible thing, try to make use of all of the support that you're getting to better yourself. You're not going to be an expert in your role overnight. You might be eager for more roles and responsibility, but like you said, you lack some experience so you'll have less responsibility to start with.
What kind of things are they saying behind your back? How do you know that they're saying things behind your back? Is it possible that it's just in your head? Also, nobody likes when one person gets all the praise for the work, so that's probably why your colleagues don't like it, because you're a team, there is no "I" only "We". You need to be a good team player, but it sounds like you want to be more of a superhero lone wolf, which is not a good thing and not how things should be in the workplace.
But if you really think that there's some kind of a problem with your colleagues or that they are somehow bullying you, then you can always find a role at a different company. I agree that sometimes people can be s**t because these days everyone has a bit of an ego and sometimes their ego can get in the way of work. It's best to avoid these kind of people, if you ever encounter them.