It sounds like you might be watching a playlist or a channel that mixes different types of content. Sometimes creators will group various types of videos together, or YouTube’s algorithm might suggest a different genre of video based on your watch history.
If you want to continue watching Dr. Sandra Lee’s videos without interruptions, you could:
Search for Dr. Sandra Lee’s channel and watch videos directly from her channel page.
Create a playlist of your favorite videos from her channel so you can watch them in sequence.
Use the YouTube filters to sort videos by “Channel” or “Playlist” to find continuous content from Dr. Sandra Lee