All depends on how many frames you get
If you tried 144hz and 75 hz and like the 144hz feel then get the 1080p monitor if you want a more screen space get the 32 inch if you want but if you can't sustain at least low to medium settings 1440p with at least 75fps then don't bother. Also at this screen size the resolution 1440p with be slightly washed out so imo get a 27 inch for better image quality.
If you are playing competitive games like CS or Cod where reaction time is important then the 1080p monitor if not and you play games like rocket league gta witcher 3 or something like that then go for 1440p monitor 75 hz where its not really about reaction time.
A suggestion would be a 27 inch 1440p 144hz. It is bigger than a 24 inch, it has the 1440p res and the 144hz so if you want them then go for it but it all comes down to what games you play and how much frames you get.