In my long tenure here I have seen very few posters who come back weeks or months later to look for new answers to their threads. Therefore, trying to respond to old threads, even were they unlocked, is an exercise in futility.
If you come here from a search engine, you will see far too many of those banners. Search engine results are not conducive to effectively helping here.
The better way to help here:
—Bookmark this forum site map: Site Map - Apple Community
—Choose topic areas where you feel you can best help.
—Use the site map’s topic links to go directly to those topics.
—Work the first few pages with the newest posts.
That gives posters the most current information, and they can recognize your contributions with an upvote. Recognition is how you advance here.