My hobby is go skiing.
When I was from elementary to high school student, our school had ski class every winter.
I played cross-country skiing and alpine skiing. ⛷️⛷️

But I'm not good at them. :(

My hobby is skiing / I like skiing.
When I was a school student, we had ski classes every winter from elementary school to high school.
I did cross-country skiing and alpine skiing but I wasn't not good at it.

My hobby is skiing. (or going skiing)
From the time when I was in elementary school to high school, our school had ski class every winter.
I did/participated in cross-country skiing and alpine skiing. ⛷️⛷️

But I'm not good at them. :(