surprises can happen and I want to know your predictions about the match? but I saw on Google like this.

It's like trap from bookies as Arsenal are not as strong as Real Madrid in Champions League. They need to be confident about their capability but it's not enough to beat Real Madrid. Arsenal can feel that they can do the same as PSG did with Liverpool in round of 16, but in Champions League, Liverpool and Real Madrid are at different levels too. If Arsenal can not beat Liverpool (in Premier League), it's more impossible or less likely they are able to beat Real Madrid in Champions League. Real Madrid are stronger, more experienced and Arsenal will have big pressure when playing with Real Madrid. It won't be good foundation for their chance of beating Real Madrid.
yes, if you think about it, it's like a bookie trap because I also see Real Madrid will definitely be superior in any aspect when facing Arsenal later, and I also remember in Arsenal's last match against PSV the result was 2-2 and of course that indicates that Arsenal's performance was also declining at that time and of course if they didn't score many goals in the first leg then they might not have advanced to the quarter-finals.
but what is certain is that I also have the same feeling as you because I am more inclined to choose Real Madrid as the winner in the Real Madrid vs Arsenal match. but of course as the host Arsenal will definitely perform optimally in this match and of course they don't want to be embarrassed by Real Madrid and of course this match will definitely be exciting because both teams definitely want to win and of course Arteta and Ancelotti will make their best strategy to win. but it is true that of course Real Madrid's experience in the UCL is not in doubt and they always play well. yeah, let's just see later, hopefully we will all be lucky when betting later.