[1.15.2] matrixStack.translate vs. GL11.glTranslated

[CookieLukas]

Hi, what is the difference between them, and when should you use which?
Also, whats the correct way of using them in 1.15.2?
In 1.14.4 I used this code to render something static in the world:

Vec3d projectedView = mc.gameRenderer.getActiveRenderInfo().getProjectedView();
GL11.glTranslated(-projectedView.x, -projectedView.y, -projectedView.z);

But this wont work in 1.15.2.
If this question is dumb, forgive me, Im a beginner in termstherms of rendering.
Thanks in advance,

-Lukas