[Supperman]

風船が増える　The number of balloons increases. For example, there was only one balloon, then, there were two balloons, and three, four....

風船が上がる　The altitude of balloon rises. For example, from 10 feet to 300 feet above sea level.

風船が膨らむ　The size of the balloon becomes larger.


成績が上がる　成績が下がる
価値が上がる　価値が下がる
値段が上がる　値段が下がる
テンションが上がる　テンションが下がる

髪が増える　髪が減る
仲間が増える　仲間が減る
人数が増える　人数が減る
ミスが増える　ミスが減る


I think the collocation is important.
I advise you to memorize them with the subject/object.
I advise you to memorize them as phrases/idioms.