As for the context sentences being too difficult early on, this site gathers all the sentences from WK that only include kanji you know so you can focus more on just trying to understand the sentence. I’ve gotten so much use out of it and I genuinely think it’s helped a ton!
I think the sentences on here are great but unfortunately they’re very inaccessible and its super clunky to try and study them. I do hope one day we get some kind of native app added to WK that properly utilises this huge collection of high quality sentences…