Get Korean teacher irl or on italki. At least once or twice a week.Try to speak and listen to much Korean as you can.
Watch Korean kids tv shows on Netflix with Korean & english subtitles (I use language reactor chrome plug in)
Real life Korean conversations for beginners by Talk to me in Korean is good.
When you get to an intermediate level (TOPIK level 3ish) the iyagi podcast is GREAT.
Ive been going through the sejong institute practical Korean textbooks. You can get them for free online. They focus on understanding and expressing youself in spoken Korean. The audio examples emulate Korean speech much more than other Korean textbooks I've used.
The sejong institute also to free Korean online courses with weekly zoom lectures.
How to study Korean, sells anki flashcard decks with audio attached. The lessons are free. They're quite dense but are BRILLANT as a reference to grammar you have forgotten or want to know in more nuance.
Vocab-wise when you do flashcards have two for each direction KOR<->ENG. Learn the words for 3 days before putting them into an Anki deck (e.g. 30 words a day, but every day 10 words 'graduate' to the anki deck)
I find Anki good for keeping words memorised but not learning them. When you are looking at the korean word play the audio, it helps SO much!
Remember Korean is one of the hardest languages for a English native speaker to learn. There are times when you will feel you're making no progress. Then one day you will realise you actually understand what you MIL is saying. Have a sacred time every day where you do some Korean. Ideally at least an hour, anything less you will not improve quickly enough to re-motivate you, or thats at least how it was for me.
Good luck
파이팅!