Well, people tend to become like their friends, so it is good to have friends who have ethical conduct that you want to follow. Of course, it is also helpful to have friends who have other qualities that we want to model - for instance, if you want success in a certain field, it is helpful to be friends with people who are successful in that field. Still, ethics is a higher priority than career success.
It is one thing that they do something that you disapprove of and another for them to encourage you to do it. Of course, human nature is such that people are rarely happy unless they get the people around them to do the same things they are. (This is one reason why choosing quality friends is so important!)
Anyway, if you wish to remain friends, you could try drawing the line with them and telling them that if you are going to remain friends, they need to respect your beliefs and stop encouraging you to do things that are against your beliefs. If they aren't willing to do that, they aren't really friends - true friends respect each others' beliefs.
Or you could cut down on the time you spend with them. It is natural for people to move on in life anyway.
In any case, if you decide to remain friends, you need to be extra careful not to be influenced.
Maybe Allah will grant you new friends who both share/respect your ethical beliefs and also give good career advice.