No problem, we moved away from Slack. The paid version was an additional overhead we coudl do without. I gambled that Google Chat would receive more iterative development (as was very basic at the time) and thankfully it has, is now very decent.
So we have everything covered under our Google Workspace licensing, helped to avoid multiple SaaS lock-ins!
As much of an appreciator I was of Slack in terms of UX, Google Chat is now quite adequate with added advantage that puts everything in one place for us, less admin, and everything just flows / plugs together across Google Workspace apps.
Besides, Slack lost all its appeal for me when Salesforce bought it! 