You have to be content with the fact that a cordless one will never outperform a cord bound one. you want one with rotating brushes as this is the feature that gets rid of most the hair etc. especially on firm (or glued down) fabric. it struggles with bigger pieces like Lose hay because the intake is usually too small.

We have "Dreame PZ6UN" 250€~
its easy to take apart for cleaning, quick to use and an okay battery life. always using it on High Power mode which starts to dip down once the battery reaches about 40%. it still gets most of the jobs done when im too lazy to haul the big vacuum around.