I want to engage in sports and football-related work, such as football reporter or team translator. What channels are there?

Relationships come first, if not. You can only rely on strength and luck. After all, recruitment in these related industries is rarely open to outsiders. Go work in similar or related industries, and then build a good relationship with people who work in football-related jobs. Through them, you can understand when there is a shortage of people and then you can Just make it up. However, their treatment is not very good.