Do you know about the form ~해 보니까 or ~아/어/etc. 보니까?
The form ~해 보니까 is used to show that you've realized something after having tried something, typically for the first time.
It's a combination of the ~해 보다 form ("to try") and the ending (으)니까 which can mean "because" or to show a realization after doing something.
This past Sunday I held a live Intermediate Level Korean classroom on my YouTube channel and we learned all about this form. And now it's condensed to just 7 minutes so you can review it quickly.