Korean Self-Study help

hi! i have read a million reddit posts about this but a lot of them contradict each other and i need a straight up answer. I’ve been using the How to learn korean website and i quite like it, but some have said its overly complicated/erroneous. I have also looked into the TTMIK books but they include lots of romanization and im not a fan of that. Any good book recommendations? or should i try the TTMIK books anyways? For reference, i know how to read and write hangul perfectly and know basic grammar but im still quite a beginner!