Barcelona and Real Madrid are both very strong teams. I like the way both teams play. In the last two or three seasons, the title was limited between these two teams. That is, Barcelona has won the championship twice and Real Madrid has won the championship once. Barcelona is playing well this season too. Real Madrid is also not sitting idly by. However, it is impossible to say in advance who will win in the end. Even if a team plays well throughout the match, it can lose for any reason.
If you want a fairer view without bias, try looking at the last five seasons, including last season. You'll certainly find a more balanced picture. In the last five seasons, Real Madrid has won La Liga twice, and Barcelona has also won twice. The other victory was won by Atletico Madrid, so this provides a clear reflection that Barcelona and Real Madrid have indeed been the teams that have dominated La Liga the most. However, I don't know which team will win this season because Real Madrid is still far from perfect under their new coach.