What is the ruling on a clear, non-viscous fluid exiting the penis while awake? Does it necessitate ghusl? And is what I did, by not performing ghusl, correct?

The clear fluid you saw is not semen (manī), and therefore it does not necessitate ghusl (ritual bath), whether you saw it once or multiple times. The Maliki school and others hold that the fluid which necessitates ghusl is semen (manī) only.

Al-Kharashī said: "Washing the entire outer body is obligatory due to the emission – meaning, the separation – of semen (manī) with customary pleasure."

Ibn Qudamah said in Al-Mughni: "The forceful emission of semen (manī) with desire necessitates ghusl for both men and women, whether awake or asleep. This is the view of the general body of jurists. Al-Tirmidhī stated this. And we know of no disagreement concerning it."

The video you watched does not apply to your situation, and there is nothing in it that would obligate you to perform ghusl.