How a jet engine works
There are many good explanations of ‘how jet engines work’ on-line. Just try searching with the term in inverted commas and explore a few different explanations. I recommend that you choose those from the aero-engine manufacturers or a national laboratory. I like the one from CFM International - 3:57 minutes.
Alternatives include those from Learn Engineering - 5:20 minutes, or GE Masterclass with Baratunde Thurston - How Does a Jet Engine Work? - 2:11 minutes.
Go ahead watch these or look for your own and learn the basics about how a jet engine works.