I would trust the Boltzmann Calculator. It's available on RoninDojo. It's unlikely that you remixed 6 times and have deterministic links. The single interpretation should be it's a coinjoin because it's very apparent. You're also benefiting from your mixing partners who stayed in the pool and are getting remixes.
https://wiki.ronindojo.io/en/setup/boltzmann-calculator
https://code.samourai.io/oxt/boltzmann
https://www.youtube.com/playlist?list=PLIBmWVGQhizLrPjpFMN5bQdbOZRxCQXUg