Larios began his professional career at the youth academy of Spanish club Real Betis. He showed immense potential from a young age and quickly caught the attention of scouts from top clubs. In 2016, at the age of 19, he made his first-team debut for Real Betis in La Liga, Spain’s top-tier football division. Larios continued to impress with his performances, but he sought a new challenge and decided to make a move to the English Premier League.