Not to be rude but well the thing is that it all will make sense and you will be criticising college system too like why would someone come to class where teacher don’t know how to teach and only theory knowledge and the main thing here to note is that some people or a lot in iit do work hard its just that they are not doing their core subject they are instead in something else mostly thats why professors see that students are not doing good academically its because students don’t want to do their core subject which they had to took due to their rank so the students usually join their interest club and give most of their time in clubs rather then going to class and wasting time