I have scored less than 40 marks in cat exam even after studying consistently . should i die of shame?

To be honest, your CAT score isn't in your hand no matter how hard you study. Last year, I got 79 percentile with 27 in RC, 14 in lrdi and 0.1 in quants and these are scaled score. This year, I got 22 in RC, 11 in lrdi and 7 in quants with most dedicated preparation. My exam center can share 40-50% of the blame for abysmal performance this year due to their mismanagement in allotment of seat in the center as well as frequent disturbances during the exam. Don't beat yourself, your score doesn't depend only on preparation, some level of luck is also involved.

Don't feel sad brother, I have been writing CAT since 2019, and I scored around 60 %ile. I took it again in 2020, and 2021(while working) and I got 85.6, and 88.3 percentile respectively...it didn't bother me much because I had work pressure...Then I took a gap year in 2022 and attempted again...this time I was pretty sure that I would be getting at least above 95%ile, even in IMS and time mocks I was scoring around 90%ile average...but on the exam day, I got panicked a lot and exam staff disturbed me few times...so, even this year CAT I screwed up and ended up getting 54 which is less than my last year's score and I might get lesser percentile than last year....you are in a much better position than me. If this was your 1st or 2nd attempt, you still have a chance to try your best and write it again....but keep in mind that some amount of luck matters in this exam..all the best...

i got 31 in cat slot 2 and from ews category. which college should i apply?

Its over bro I would rather suggest you try again in 2023 or appear for ADMATs seriously if you have filled any forms but again these are just suggestions, decision is yours.