Most of us get booted once in a while. We may be booted from a sports team, friend/family group, job, club or more. When we get booted, there's usually a lot of emotion and an equal amount of questions such as why did this happen; what role did I play; what role did others play and so on.
It's important to analyze the situation to see what might have been different including your actions, words, preparation as well as the factors that don't include you. In the end, you'll likely see the situation better, learn some important lessons, and make some decisions about whether you may return to the group or move on.
If it's time to move on, you have to make peace with that. It may take some time to analyze and then make peace, but if you've donee all that you can to the best of your ability, you'll likely arrive at that peaceful place.
Change happens throughout life and sometimes that change may incur being booted--that happens. Onward.