did Metallica rip off Other bands ? Part1/3

Megadeth & Exodos aren“t encluded in this series , cause Dave Mustaine was with metallica and Kirk Hammett was with Exodos so we cant say it’s a rip off if there were any similarities !! Part 1/3 !! share with us what do you think and have fun !! ps: Metallica is my number 1 :D !!