Wix still has not fixed my issue on the forum and now it is happening on the blog.

So, for now on, the way to post youtube videos is similar but now you need to add a title saying "click here to watch video" or you just add a screenshot of the video to get people to know what it is and click on it. This is also a message to every one of my users/subscribers to know I will be adding in my TOS/PP a new section describing how to use this website. Seeing how things like YouTube videos not showing on the post might bother users, I need to add a "how-to use website section on my terms of service page.