I agree with Stevecro. There are processes available to you and if you can prove that committee members have benefitted at the expense of other owners than you should pursue them.
If you can find a strata manager prepared to be nominated as a statutory appointment, that would be the first test of whether you have a case or not.
If you can’t get a strata manager on board then you could seek orders at NCAT compelling the owners who have defrauded the owners corp to repay the money. But that will require proof, as will any other option you may be considering.
Feeling excluded from the process and then seeing others on the inside apparently benefitting is not evidence of fraud.
You would be better to ask for what you want on the same terms as the others and then challenge that specifically when it is refused.