What can I do besides service sales when looking for a job?

I suggest you go to some large formal talent websites and check by post (some talent websites are called "functional categories"). Generally, it is set according to national classification standards and local actual conditions, and see which one suits you, as shown in figure 1:

You can also click on the classification above to enter the next level of more detailed classification, as shown in Figure 2:

In addition, there are more search options in the job search interface (such as location, job information release time, intended industry, etc. ), so that you can filter a lot of unsuitable job information and quickly find the job information that suits you.