Was or is your wife Swiss?
If she was/is Swiss , can remember the "Heimatort" (German) or "Lieu d'origine" (French) of your wife, or can you find it on any of the documents?
https://en.wikipedia.org/wiki/Place_of_origin
I'd recommend that you contact that municipality to ask whether your and your wife's divorce was formally registered and whether or not you are now already divorced.
If that doesn't work, I'd suggest you contact each of the various authorities who issued you with the notice of separation and the court documents as you set out in your earlier threads:
https://www.englishforum.ch/complain...p-divorce.html
https://www.englishforum.ch/leaving-...ce-needed.html
https://www.englishforum.ch/permits-...t-story-6.html
Ask them for a copy of the latest document(s) in your file and whether there is proof that you are divorced, or not. They are more likely to be able help you if you write in the local Swiss language and include copies of your full idendity documents including birth certificate, the permit you had, the dates you entered and left Switzerland, as well of all the documents that they sent you, at the time, especially since your files may be archived, by now. Also ask them, if they cannot determine your marital status, to whom else you should apply.
There is also an organisation for Swiss living abroad. Even though you are not Swiss, perhaps they may know how to go about this, since they know about international couples. https://www.swisscommunity.org/en/
For the same reason, you might also ask for advice from www.binational.ch .
If your wife was not Swiss , then you might first try to determine whether she still resides in Switzerland (e.g. contact someone else you knew, such as her siblings or parents) and, if not, apply to her country of citizenship.
Finally, if none of that helps, then you could contact the lawyer you had then... although you'd have to pay for that service, of course, and that lawyer would most likely start with the above enquiries, which you could do, yourself, at little cost.