So to start off Im 1550 rapid FIDE and peak 2070 CDC rapid and have been playing 1.D4 for while , though due to disappointing results I have resorted to switch my main opening from the Jobava London to the QGA and QG exchange as white to better suit how I am much better at playing positional and solid with the caro kann. But I only have prep vs d5 , e6 , c6 , c5. So I need some suggestions on what openings I might want to have a look at , I am not outright rejecting unconventional openings but would prefer solid simple play which offers good middlegame and endgame chances practically. I am not afraid to learn theory and can even learning 20 or so moves of theory for a mainline but it would be nice if it is on the lower end of theory memorising spectrum.