Return the longest consecutive sequence of a value in specific column

I am using PostgreSQL 12.0 and trying to get the longest sequence of continuous rows for a specific column and value.

The table is called team2 and contains a team's results which looks like:

match_id (pk), team_name (varchar), opposition (varchar), match_result (varchar)

My query is trying to find the longest sequence of 'Win' in match_result. There are 23 Wins in total and using the eye the longest sequence should return 5. However 23 is returned. How can I alter my query to select only the longest sequence?

WITH ConsecutiveSequences AS (  SELECT    match_result,    ROW_NUMBER() OVER () - ROW_NUMBER() OVER (ORDER BY match_id) AS grp  FROM team2  WHERE match_result = 'Win'),GroupedSequences AS (  SELECT    match_result,    COUNT(*) AS consecutive_count  FROM ConsecutiveSequences  GROUP BY match_result, grp)SELECT  COALESCE(MAX(consecutive_count), 0) AS longest_consecutive_sequenceFROM GroupedSequences;