You can try the next all-round market trading software on the website of China Merchants Securities first. Of course, non-investment customers can only look at the market, not trade, nor can they look at real-time information.
There is also an expert online service on the website. Non-customers can only look at it and can't ask questions.
The private business on the website also provides research reports, but only for customers.
In the business outlets, you can find the nearest business department of China Merchants Securities and open an account nearby. There is also a consultation and complaint telephone number of the sales department. You can call if you have any questions.
The problem of stock profit and loss may be because you don't understand how they are designed. This can be downloaded, so I won't answer it in detail.