Yes, since Antony joined Betis on loan, I've felt that he's a better fit for Betis than Manchester United. As we know, he wasn't given much playing time at Manchester United, while at Betis, the coach trusted him to play regularly. So, with that in mind, I think Antony is better off joining Betis. It seems like Antony doesn't have any burdens when playing for Betis. Hopefully, he'll be able to put on another great performance this season. Furthermore, Betis isn't just signing Antony permanently this season. After seeing the transfer market, Betis also signed Natan, a center-back from Napoli, permanently. What makes it even more interesting is that Natan is also Brazilian, like Antony. So, is this a coincidence? Is this really Betis' plan for Antony to have a teammate from the same country as him? Because after I saw the squad list from the Betis team, there were no players from Brazil other than Antony and Natan.
Real Betis know they without Antony is nothing, see the result of past four matches, they only won one match. The thing is they met weak teams, if they're struggle against weak teams, it would be a big problem when they met strong teams.
In the end, Manchester United lose in negotiation, they demand high price just because they sign a lot of money, but they didn't realize if they don't even want Antony at all in Manchester United. Hence, they accept to sell for 22 Million Euros, what's the point to keep Antony and still paying his salary right? Real Betis is only waiting, if they don't let Antony to leave this year, Manchester United will get nothing because his contract end in the next year.
Yes, you're absolutely right. Betis's forward line has been extremely weak since Antony left. They're certainly aware of this, which is why they're so bold as to sign Antony now. But Betis' strategy to acquire Antony is truly masterful. They're essentially waiting for Manchester United to give up. As you said, Manchester United no longer needs Antony, so not selling him now would be a significant loss for Manchester United. So, in essence, Betis excels in this regard, as they've been able to capitalize on the situation very well.

Betis will also face Levante in their upcoming match. I think this match would be a perfect opening for Antony, who has just rejoined Betis. I think if Levante were their opponent, it would be easy for Betis to beat them. Levante's performance has been poor so far. They've only lost in their last three matches. With that in mind, I think Betis can definitely beat this team. And if they win, I think it will be very good for Betis' confidence to be restored again.