Consensus algorithm for e-voting blockchain

Hi, we are planning on implementing a blockchain based voting system as a personal project.
We are currently trying to find what consensus algorithm to use in our blockchain.
There is'nt enough resources online regarding consensus algorithms other than POW and POS.
We dont want to use proof of work because the user does not gain any money from our system - so it wouldn't be lucrative of him to invest resources in mining the new block. Furthermore, Proof Of Stake is also not an option because our project has nothing to do with cryptocurrency so we cant put tokens on stake, but we think we could maybe use a modified version of Proof Of Stake yet we don't have an idea as to what alternative we should put on a stake.
We thought of using FBA (Federated Byzantine Agreement) but there isn't enough information online about how the algorithm works in depth...
What are your thoughts? do you have any suggestions about what consensus algorithm we should use?