It is a fairly balanced opponent for both teams this weekend, but I just hope Manchester United does not make many mistakes or blunders that can harm themselves. Because Brighton is a fairly strong team and has also made surprises at their opponent's home, so Manchester United must really do their best to be able to win again at home when hosting Brighton. Moreover, for now Manchester United really needs full points to get a better ranking and also to be able to approach the rivals in the top ten of the current standings.
Manchester United will make many blunders, take a look with the defending line, there are Martinez, De Ligt, and Yoro, they're bad defenders. Also you know, Onana is not consistent, sometime he play good, sometime he play like the worst goalkeeper.
The problem Brighton currently have is many players are injured, but I'm sure the results are either draw or Brighton win, I'm convinced Brighton will win.
At least so far this season Brighton is still quite good when playing away, out of 11 away matches that have been played that Brighton has 4 wins 4 draws and 3 losses. Meanwhile, for 11 home matches of Manchester United so far this season, Manchester United got 5 wins 1 draw and 5 losses. Thus, there is also no guarantee that Manchester United can win despite playing at home, because Brighton is also not a weak team at all and of course, Brighton is able to provide good resistance that makes it difficult for Manchester United to win at Old Trafford.