Genki I and II are popular self-study textbooks in English, although they can be a bit expensive. They use a bit of kanji, although beginner textbooks in English will use less than you know probably. The workbooks have plenty of practice. If you need it for self-assessment, the answer key is separate but covers Genki I and II both workbook and main book. You could try to buy the textbook used.
The other popular one around here is Minna no Nihongo. A main point of difference is that it uses Japanese explanations, although there’s a separate English translation. It’s immersive in that way. It also has the point in its favour that you won’t have to always be going through three languages if you don’t want to. I don’t know how much it actually utilises kanji, not having a copy myself. Genki is typically said to be more beginner-friendly, but that may be because it has a lot of English.
Both have workbooks for lots of practice. Minna no Nihongo has a whole bunch of different workbooks for each type of exercise. So you could skip the kanji workbook but get the grammar and reading-related ones, I guess?
There are of course other options I know less about.
You could search the forum for people’s thoughts on these. ‘Genki vs. Minna no Nihongo’ or similar will yield a lot of results, as well as keywords about textbooks, 'cause there are options outside of those (and I don’t speak German)