If you click your username on your post, you will have the option to see all the posts you've ever made on the forum. "View forum posts"
When I click yours, there are 20 pages of posts. But it looks like they only go back to Dec. 2020.
It seems odd you wouldn't have gotten all your history when your account was restored. Unless the webmaster just gave your name back but not the actual account. If you find an old post previous to Dec 2020, see if you can edit it. Or see if you have any older PMs.