>>1075042like other anons said,
>practice practice practiceIn my experience, bunnyhops themselves are easy to learn, but increasing your height takes a little bit more time
and regarding your bike, 11 kg is absolutely reasonable for a bmx. I don't even think I have ever ridden one that light (I'm not a poorfag, I just never bothered to; I bought an haro forum and stuck with it all the years I practiced).