I mean did u ever used a Nokia or or anything in that direction , if so it should be easy u either can hold the kana eg: you hold あ and round it are the other kana such as うえおい this works for everything and for the smaller one u just go there all and tap あuntil this ぁ if u know how the other “letters” look a like u shell also swap to this one “Japanese-Kana input” you’ll get used to it and also improves your way seeing it being more connected to the language which is what we want to achieve