They even specifically make a powerful search function to make looking up things easy. You can make a combine query of something like `post by me` `contains ima

They even specifically make a powerful search function to make looking up things easy. You can make a combine query of something like `post by me` `contains image` `in certain channel` `before 2020/03` `contains certain text`. And it will filter out any matching result for you. It's currently the most useful search function i ever seen in IMs