Brooks represented England at youth level and was part of the side that won the 2017 Toulon Tournament in France, however the youngster has ruled out any possible switch to represent England in the future.
Brooks, who was born in Warrington, has made three appearances for the Welsh senior side, although none in a competitive match.
Brooks told 'Sky Sports News', "If I get a cap or if I don't get a cap, I won't be switching,"
"I am Wales now and I've just got to work as hard as I can to get into that 11."
Brooks, along with the likes of Ethan Ampadu, Chris Mepham and Ben Woodburn, is part of a promising generation of young Welsh players hoping to replace the stars of Euro 2016.
"It is a very good group, we've got a good mixture of ages and characters in there," he said.
"There is a pathway visible for youth Wales players. That can only be a positive. The gaffer has shown a massive interest in the youth.
"Over the past couple of camps and games, people who have been performing - no matter what their age - they will get their chance to show what they can do among the big boys and the first team."