disable video URL auto-embedding for a part of the post

Well…

To embed a video or another object into a post or page, place its URL
into the content area. Make sure the URL is on its own line and not
hyperlinked (clickable when viewing the post).

https://codex.wordpress.org/Embeds#What_About_oEmbed_Discovery.3F

So, to “disable” embedding the simplest thing is to make sure the URL isn’t on a line by itself, or provide a hyperlink.

You could (not an exhaustive list I’m sure):

• Wrap the url in a span block
• Add a dummy comment <!-- --> before or after the url
• Hyperlink it
• Create an ordered or unordered list — <ol> or <ul>
• Add a <br>
• Create a shortcode, though this is by far the most (unnecessarily)
  complicated method.