Chinese verb 'to become' I've found no leads as to this on the internet, and also have been unable to ask my teacher about this sentence struture. So, I hope this isn't a duplicate!

I was wondering, how do I say become in Mandarin?

For example:

Since high school started, RE became boring.

If you don't exercise, you won't become fit.

If you keep practicing the piano, you'll become much more skilled.

I don't know if I'm a total idiot, asking this question. I legitimately just can't find the answer, not even in my dictionary. No internet search has yielded any leads either.
For &quot;become + adjective&quot; it would be &quot;變得+ adjective&quot;

「自高校開學以來，RE 就變得沈悶 」 - &quot;Since high school started, RE became boring.&quot;
「如果你不運動，你就不會變得健美 」 - &quot;If you don't exercise, you won't become fit.&quot;
「如果你繼續練習鋼琴，你將會變得更有技巧 」 - &quot;If you keep practicing the piano, you'll become much more skilled.&quot;

For &quot; become + noun&quot; it would be &quot;成為 + noun&quot;

「我想成為一個醫生 」 - &quot;I want to become a doctor.&quot;
「她想成為偶像歌手 」 - &quot;she wants to become an idol singer.&quot;


Google Translate:
自高校开学以来，RE 就变得沉闷
如果你不运动，你就不会变得健美
如果你继续练习钢琴，你将会变得更有技巧
我想成为一个医生
她想成为偶像歌手