Hi Tpu, welcome and thank you!
I didn't realise there was an English-language Japanese mahjong game for the Nintendo Switch. I've added "Japanese Mah-Jongg
" to my game list
Japanese mahjong is played with a one-Han minimum for winning hands. You get Han from combinations (Yaku), bonus tiles (Dora) and red fives but only Han from combinations count towards meeting this condition. Therefore a complete hand must also qualify for at least one combination to be able to declare a win.
Your game also has a rule option called "2 Han Required". When this is applied it should only require two Han for a win when the second counter (next to the stick with eight dots) is at 5+.
When you're still learning there are a couple of combinations that are easier to make because they remain valid if you've stolen tiles from your opponents.
All Simples = your hand has no winds, dragons, ones or nines. When the "All Simples With Melded" option is applied this combination is valid with steals.
Value Tiles = your hand as a triplet (three identical tiles) of red, white or green dragons, or your wind (the symbol above your hand) or the round wind (shown top-left). When you have a pair of matching tiles you can often steal the third to complete the set.
There are several links in other threads on this board to helpful learning resources - and of course you can ask again if you have more questions.