The current versions of Java are acting up, you'll have to downgrade to jre-8u331 (which is a wee bit old, from around August/September) to get it to work.
Hopefully this is a short remedy as the Launcher now says the new C++ client is almost ready for release so they can discontinue the java one, like what RS3 uses.
https://www.oracle.com/java/technologies/javase/javase8u211-later-archive-downloads.html
Can I turn in a paper without citing all sources?
"No."[1]
1. William Shakespeare,
Hamlet
, Act III, Scene 1, line 96.
09-Apr-2023 16:47:05