How to switch to marketing after three years of sales?

I've seen people switch from sales to marketing. Two of them are from fast-growing industries, and both of them are foreign companies. 1 internally transferred to the marketing department of our company. There happened to be a vacancy in the marketing department, and she had a good relationship with the personnel department, so she was transferred internally. There is also 1 who jumped ship to another foreign company, but from a level, she suffered. She used to be a regional sales director and a marketing assistant in marketing. Now she hasn't been promoted to marketing specialist for 1 years. However, from the perspective of salary, both of them did not suffer, but increased their income. It gives me the feeling that women are easier to turn and men are more difficult. Women can slowly rise from the assistant of the marketing department, which is relatively rare for men. My advice to you is: the marketing department of foreign-funded enterprises is your goal.