わかってきた

have come to understand

→ 分かる
phrase Uncommon #14,860
have come to understand Often describes understanding that has developed gradually or something that has become clearer over time.
JA: 練習を続けて、やっとやり方がわかってきた。
EN: After continuing to practice, I’ve finally started to understand how to do it.

やり方がわかってきたよ

I'm starting to get the hang of it.

— 天空の城ラピュタ (1986)

彼が私を好きでないことが私にはわかってきた。

I've come to realize that he doesn't like me.

事の真相が少しずつわかってきた。

The truth of the matter is gradually coming to light.

私は彼の意図を誤解していたということが、だんだんわかってきた。

I gradually came to realize that I had misunderstood his intentions.

彼のねらいが何だかわかってきた。

I'm beginning to understand what he's up to.

どちらを購入するかの決定が難しいことだとわかってきた。

I've come to realize that deciding which one to buy is difficult.