Reguilon has quickly established himself as Sevilla's first-choice left-back, outperforming expectations with the Andalusian club.
"I'm very happy with everything that is happening," Reguilon admitted in Spain's pre-match press conference.
"I'm in a great moment, it's been a very unusual year.
"I have gone from never having played a professional match a year ago to the national team."
When quizzed on his relationship with Real coach Zinedine Zidane, especially with Reguilon only on loan at the moment, the Spanish defender was non-committal.
"I don't think about Zidane, I merely think about myself," he added.
"You never know if I would have had a place [in his team].
"I wanted to gain minutes and experience, I'm satisfied with how I'm doing."