For those who are really careful I think they will certainly do single bets but not for those who really risk everything in this case because indeed For multi bets themselves offer a bigger return but at the expense of increased risk because all that is needed is one choice lose for bets to return nothing. This is what really makes some people happy about this, but on the other hand things like this I still feel it depends on what we bet on but for the UCL match, especially Madrid against PSG, it is not even possible that many people will make multi bets.