The situation of United and Sociedad is similar. We can see weak performance from both teams in their own league. However, both teams are trying to win the Europa League title. The first leg match was very competitive . Both teams tried their best to win.
The second leg match is Manchester United's home match. However, considering the home match, Manchester United team cannot be called strong. Because in the home match too, we have seen Manchester united team lose to weak team. So it is impossible to predict which team will win this match with certainty. Both teams have the possibility of winning. Betting on this match is risky.
To really determine who will win in this decisive second leg match is indeed little difficult to predict, but Manchester United have greater chance of winning than Real Sociedad and I am sure Amorim has prepared his squad well, for the bet itself you can minimize the risk by choosing Double Chance with Manchester United win or draw and Under at the largest number.