Yeah, thats what the Nazis made it to and what the altright worshippers want us to believe. In reality, conversion to Judaism is ofc possible just like for other religions: https://en.wikipedia.org/wiki/Conversion_to_Judaism
There are 20.000 conversions each year.
As for Islam:
The Quran’s Sura 5:33 says about infidels, “They shall be slain or crucified, or have their hands and feet cut off.” Sura 9:5 says, “Slay the infidels wherever you find them ... and lie in wait for them ... and establish every stratagem (of war against them).” Sura 47:4-9 promises paradise to whoever cuts off the head of an infidel.
Every religion has these lines.