Yes, you're right, and Antony really found a great environment at Real Betis, which made him very eager to join this La Liga club. He even said that he rejected an offer from Bayern Munich because he only wanted to go to Real Betis. Wow, he was on loan at Betis last season for a few months and has found his home.
Source: Antony has confirmed he rejected the chance to sign for Bayern
Antony is a Brazilian player and traditionally he is like other Brazilian players who need freedom in playing on field. Bayern Munich is a German club which has very strict discipline as it is traditional German football and also German's basic trait. I believe that Antony actually considered a lot of things including as possible reason above. Above all, he revived his career from failure in Manchester United to success in Real Betis so it's likely no valid reason to move to another new club, new league and face with challenge again while next summer, World Cup 2025 will happen.Source: Antony has confirmed he rejected the chance to sign for Bayern
This is what peace feels like. The Brazilian player found peace at Real Betis. The fans also embraced him. He was transferred during a period when he was playing poorly, and there weren't many expectations for him, but Antony gave everything for the team. His individual talents helped Betis win numerous points. He didn't want to abandon these fans and the city. I'm sure a transfer to Barcelona or another European team could be on the cards in a few years. As long as he finds a pleasant and comfortable environment here.
He found comfortableness in La Liga and Real Betis as well as got good love and support in Betis. It's more easily to return to Betis and continue this beautiful chapter in his player career than taking a new challenge and adventure to Bundesliga and Bayern Munich. Antony will not get any solid position in Bayern Munich squad while in Real Betis, he will be given a solid position in their squad in most of matches. It gives him chance of playing regularly and can help him to be called for World Cup 2026.