I posted about how I learned Kanji in the wild here. In short, although the goal is to learn Kanji meaning, when you see the Kanji, you must recall at least 1 reading.
Also, for most/all Kun readings of every Kanji, you should always know the vocab…
In the end, you have to know both Kun and On readings.
If you insist on learning Kanji meaning alone, try RTK and www.kanjipedia.jp
You don’t need to know Kanji meaning that much, but you need to know associated vocab enough to imply the meaning of a new vocab.
お袋 and 寿司 are good examples up there, that you need to know the reading, at least 1, but more than 1 is preferred.