Here are a few ways to rewrite the title in Swedish, depending on how literal or natural you want it to sound:
Most literal (keeps the word ”backs”):
Mira Jungåker backar Damkronorna till VM-medalj
Most natural (uses ”believes in” + concise):
Mira Jungåker tror på VM-medalj för Damkronorna
Fuller translation (includes ”bring home”):
Mira Jungåker tror att Damkronorna tar hem en VM-medalj
Note: I dropped ”Sveriges” from the name, as it is redundant in a Swedish context since Mira Jungåker is a Swedish player. If you want to keep the nationality phrasing, you could write ”Svenska Mira Jungåker backar…”, but it sounds slightly unnatural in a headline.