My daughter has small wrists. She's 11. I don't know offhand what the best band options for you would be, so I will try to my sport bands on her and get back to you. She's away this weekend so it will be a day or two.
She tried my stainless steel sport before when she was still 10 and she could wear it, but as I recall it wasn't comfortable. The stainless steel was too heavy on her. The aluminum sport option we bought her aunt was more comfortable.
Are you turning 11 on your birthday or are you 9 going on 10? The reason I ask is that if you're about to turn 11, you might be in for quite a significant growth spurt in a few months that might make the smaller sport band a really comfortable option. The sport band comes with three pieces, giving you the option of assembling a small sized combo.
(Would you mind transitioning more toward writing in standard English? We have non-native English speakers on this forum and it would be a courtesy to them if you were to write in standard English. It can be a bit of extra effort for them to try and decipher what you're writing.)