Covid 19 Vaccine Deep Dive (by MedCram on YT. 35 mins, deep discussion with the professors)
For a more quick overview about the Covid 19 and how it works in our body try these YT videos. (These videos have advertisements)
What the COVID Vaccine Does To Your Body (by AsapSCIENCE)
Inside the Lab That Invented the COVID-19 Vaccine (by It’s Okay To Be Smart)
Doctor Explains mRNA Covid-19 (by Violin MD)