Query optimization in Postgres - postgresql

Question

I have is over 25 million rows, I'm trying to learn what needs to be done to speed up the query time.
"Properties" column is integer[]. I created a GIN index on F."Properties", what is slowing my query and how do I solve it?
SELECT
F. "Id",
F. "Name",
F. "Url",
F. "CountryModel",
F. "IsVerify",
count(*) AS Counter
FROM
public. "Firms" F,
LATERAL unnest(F."Properties") AS P
WHERE
F. "CountryId" = 1
AND P = ANY (ARRAY[126,128])
AND "Properties" && ARRAY[126,128]
AND F. "Deleted" = FALSE
GROUP BY
F. "Id"
ORDER BY
F. "IsVerify" DESC,
Counter DESC,
F. "PageRank" DESC OFFSET 0 ROWS FETCH FIRST 20 ROW ONLY
**Query Explain Analyze**
"Limit (cost=793826.15..793826.20 rows=20 width=100) (actual time=12255.433..12257.874 rows=20 loops=1)"
" -> Sort (cost=793826.15..794287.87 rows=184689 width=100) (actual time=12255.433..12257.872 rows=20 loops=1)"
" Sort Key: f.""IsVerify"" DESC, (count(*)) DESC, f.""PageRank"" DESC"
" Sort Method: top-N heapsort Memory: 29kB"
" -> GroupAggregate (cost=755368.13..788911.64 rows=184689 width=100) (actual time=12062.457..12224.136 rows=201352 loops=1)"
" Group Key: f.""Id"""
" -> Nested Loop (cost=755368.13..785217.86 rows=369378 width=92) (actual time=12062.450..12176.968 rows=205124 loops=1)"
" -> Gather Merge (cost=755368.12..776878.19 rows=184689 width=120) (actual time=12062.435..12090.924 rows=201352 loops=1)"
" Workers Planned: 2"
" Workers Launched: 2"
" -> Sort (cost=754368.09..754560.48 rows=76954 width=120) (actual time=12050.371..12060.077 rows=67117 loops=3)"
" Sort Key: f.""Id"""
" Sort Method: external merge Disk: 9848kB"
" Worker 0: Sort Method: external merge Disk: 9840kB"
" Worker 1: Sort Method: external merge Disk: 9784kB"
" -> Parallel Bitmap Heap Scan on ""Firms"" f (cost=1731.34..743387.12 rows=76954 width=120) (actual time=44.825..12010.247 rows=67117 loops=3)"
" Recheck Cond: (""Properties"" && '{126,128}'::integer[])"
" Rows Removed by Index Recheck: 356198"
" Filter: ((NOT ""Deleted"") AND (""CountryId"" = 1))"
" Heap Blocks: exact=17368 lossy=47419"
" -> Bitmap Index Scan on ix_properties_gin (cost=0.00..1685.17 rows=184689 width=0) (actual time=47.787..47.787 rows=201354 loops=1)"
" Index Cond: (""Properties"" && '{126,128}'::integer[])"
" -> Memoize (cost=0.01..0.14 rows=2 width=0) (actual time=0.000..0.000 rows=1 loops=201352)"
" Cache Key: f.""Properties"""
" Hits: 179814 Misses: 21538 Evictions: 0 Overflows: 0 Memory Usage: 3076kB"
" -> Function Scan on unnest p (cost=0.00..0.13 rows=2 width=0) (actual time=0.001..0.001 rows=1 loops=21538)"
" Filter: (p = ANY ('{126,128}'::integer[]))"
" Rows Removed by Filter: 6"
"Planning Time: 2.143 ms"
"Execution Time: 12259.445 ms"