Regular Expressions 101

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"
https://www.fifa.com/womensworldcup/teams/team/(\d+)/
"
gm
https://www
matches the characters https://www literally (case sensitive)
. matches any character (except for line terminators)
fifa
matches the characters fifa literally (case sensitive)
. matches any character (except for line terminators)
com/womensworldcup/teams/team/
matches the characters com/womensworldcup/teams/team/ literally (case sensitive)
1st Capturing Group
(\d+)
\d
matches a digit (equivalent to [0-9])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
/ matches the character / with index 4710 (2F16 or 578) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.

Regular Expression
No Match

r"
"
gm

Test String