If textbooks work for you (and you haven’t committed to a particular title since making this thread), I would also recommend looking into Minna no Nihongo. It’s comparable to Genki, but each line of textbooks has advantages and disadvantages. One of MNN’s strengths is that it has loads of exercises, and you can buy additional workbooks to further drill yourself! It’s also a little more thorough than Genki in terms of the amount of vocabulary and grammar that you’ll learn, and completing it will put you a little ahead of where Genki will take you. It does require a lot of self-motivation, though, and it can be intimidating to start, because the main textbook is entirely in Japanese! (There is a companion textbook that has translations and grammar explanations, and the books are meant to be used in tandem, but the primary book is in Japanese, and you have to learn to decipher it. A little scary at first, but great for reading practice!).
If you study effectively, you shouldn’t have to do much flipping between the two texts, either. I’ve had great success focusing on learning the vocab list for the lesson first (this takes me at least a week lol), then reading the grammar explanation, then diving into the textbook and seeing how far I can get without having to consult the translation. So far, I’ve been able to read the main text successfully without having to look at the translation even once. But if this process sounds unpleasant to you, Genki might be a better option. MNN is more immersive, with all of the benefits and downsides of that approach.
I’m currently working my way through it as a self-learner, and I’m not having any trouble interpreting it. One of the advantages of learning through a textbook like MNN (and I’m assuming Genki as well) is that you’ll learn vocab, and then right away, you’ll apply the vocab by seeing it in context as the book is also teaching you grammar. I’ve found that studying vocab and grammar together like this (instead of studying them separately, like vocab flash card decks paired with websites explaining grammar points) really helps reinforce both.
Tofugu has a guide on choosing a beginner textbook, which is how I decided on MNN. I recommend looking through this list and seeing if any of the books speak to you. I’m really happy with my choice so far