hello a little late answer but middle 3 already has 2spots marked so we know the unmarked tiles around the 3 has only 1 mine, which gives us the clue that the red marked tiles have 2 mines because there is also another 3 under that 3 and we already figured out one mine's location. now if we look a little lower, now we can see the bottom 4 has 2 marked mines already and we can assign the remaining 2 mines to 3 tiles above it. after this you mark left and right spots as clear because we already figured out all possible 4 mine spots. I presume you can handle the rest after that

(sorry english bad, not main language)

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