First, continue to learn industry knowledge.
If you have a favorite industry, you should concentrate on learning the knowledge of this industry. Sometimes you should sign up for some courses, get to know the talents in this field and receive vocational education, so that you can accumulate enough experience before you can engage in this industry.
Second, solve the problem of survival first.
Well, the first thing for college students to solve after graduation is their own living expenses. After graduation, they should first find a job that they may not like very much, but this job can help you support yourself on the one hand, and at the same time, it can also accumulate some savings, so that you can have money to study what you want to learn. Don't rush for success after graduation, first find a job to accumulate work experience and solve life problems;
Third, ask the seniors for advice.
Maybe your major doesn't mean you don't like it, but you haven't found the pleasure after persistence. Many things persist not because they like them, but because they persist. Maybe you will like your major after doing something well.
Therefore, it is normal for most students to do jobs that are inconsistent with their majors. If you want to cross majors, you should keep learning and consult your predecessors, but only if you find a job to support yourself, accumulate work experience, and then slowly change careers.