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.
Antony prioritizes performance and comfort so it is not surprising that he prefers Real Betis even though the salary is lower, we also saw Antony's performance was very good when he played there and the support from the fans made him want to stay.
You’ve got to prioritize where you are valued with a fair income more than where you would be paid a huge amount and you don’t get the chance to showcase your skills, amuse your fans and have chances to inspire others to do better. This is what Antony is enjoying at Real Betis, he fits the team so well that, it didn’t take long for his performance to be noticed visibly on the pitch and he became a major threat to oppositions. He wasn’t appreciated in Manchester United, he knows what that is and now, his where all he does is appreciated, better to enjoy it.