MU may have a low chance to beat betis but it doesn't mean betis can also be beaten easily. Betis is also having more advantage compared with MU as the draw against real madrid was boosting the mentality of the players.
Betis plays in the best situation where its players are capable enough to be in the same level as real madrid.,
It's bad that this defeat happened before the EL match, it's not clear how it can affect the team, Betis will be in a better mood since they drew against Real Madrid, this is a good result. As for Manchester United, it will all depend on the coach, how ten Hag can understand what was the reason for such a poor performance of the team in the second half and whether he can raise their morale. After all, the team was constantly progressing and confidently defeated a very strong opponent, Barcelona, it seemed that Manchester United was all right. Betis is not an easy team, but weaker than Barcelona...
To be honest, I'm not worried when Manchester United host Betis in the game later. it's true, defeat to Liverpool with a landslide score cannot be tolerated. the United players played very badly, especially in the second half. perhaps, the impact of fatigue affects the team's overall performance. but it has become commonplace, if someone loses in a match.
I'm sure, Ten Hag will not let his team slump after the defeat of his team at Anfield. they will quickly rise, and appear again with the best performance. Ten Hag is quite an experienced coach, and how he will correct his squad. after all, in the match United will play as the home team. In fact, this match is tough for the opposing team, because in terms of quality Real Betis is under United.