Help with downloading on Mac :)

So I also posted on the discord server but I found this and figured it would be easier on here. I am trying to redownload the game as I had it in the past but don’t know what happened to it. My problem is that whenever I try I either get an error message that says I already have it downloaded (which I don’t), the steps might start but then they just suddenly stop before its finished, or the steps go but then I get an error message saying " wine stable cannot be opened because the developer cannot be verified" and when I say to open anyway a new terminal pops up and idk what to do. Thank you for the help I’m not great with the coding stuff so I really appreciate your patience in helping me out.