I use both, and it really depends on the language.
Something like Java is really benefitted from IntelliJ, Spring integration is excellent, but especially scripting languages like Python or JavaScript/Typescript don't get enough uplift and you might as well use VS Code.
I mean for Java. IntelliJ is made for Java. If you want to do Python, Jetbrains (the creator of IntelliJ) made PyCharm. For Javascript, they made Webstorm.
Granted; I was very junior then--and I think my issues may have been mostly related to the finnicky nature of java tooling and dependencies rather than the IDE itself.
Something like Java is really benefitted from IntelliJ, Spring integration is excellent, but especially scripting languages like Python or JavaScript/Typescript don't get enough uplift and you might as well use VS Code.