You can insert a video directly into WordPress by simply pasting its link. YouTube is suggested for this purpose, as it enables you to post public videos as well as private videos and does not count toward your website storage.
An example is below.( It is very rough since I just had the idea of doing this on the spur of the moment.)
You can add as many videos as you like and because they are hosted on YouTube they do not count against your website storage limit.