How to optimise performance in query having 10+ joins - google-bigquery

Question

I am running a query in BigQuery - which contains 10+ joins leading to performance delay if I try to fetch data for 3-4 months.
It works fine for a day or two, but keeps on executing for 3+ hours for even 15days data fetch.
I need to fetch last 6 months data, but not even able to fetch for 15days.
Any optimization suggestion would be highly welcomed.
Sample Query Below:
with staging as (
SELECT *
FROM base_table
WHERE condition1,condition2,...condition n
),
login_users as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
menu_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile1_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile1_success as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile2_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile3_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile3_success as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile4_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile4_success as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile5_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile5_success as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile6_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile6_success as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile7_clicks as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
),
tile7_success as (
SELECT
field1,
field2,
field3,
field4,
field5,
field6
FROM staging
where conditions
)
select
lu.Brand,
lu.Summary_Date,
lu.Country,
count(distinct lu.field3) loggedInUsers,
count(distinct mc.field3) clickedMenu,
count(distinct setc.field3) clickedtile1,
count(distinct sets.field3) tile1_success,
count(distinct histc.field3) clickedtile2,
count(distinct detc.field3) clickedtile3,
count(distinct detUs.field3) tile3_success,
count(distinct helpc.field3) clickedtile4,
count(distinct helps.field3) tile4_success,
count(distinct gcc.field3) clickedtile5,
count(distinct gcs.field3) tile5_success,
count(distinct gcp.field3) clickedtile6,
count(distinct gcps.field3) tile6_success,
count(distinct gcd.field3) clickedtile7,
count(distinct gcds.field3) tile7_success
from login_users lu left join menu_clicks mc
on lu.field5 =mc.field5 and lu.field2 = mc.field2 and lu.field6 < mc.field6
left join tile1_clicks setc
on mc.field5 =setc.field5 and mc.field2 = setc.field2 and mc.field6 < setc.field6
left join tile1_success sets
on setc.field5 =sets.field5 and setc.field2 = sets.field2 and setc.field6 < sets.field6
left join tile2_clicks histc
on mc.field5 =histc.field5 and mc.field2 = histc.field2 and mc.field6 < histc.field6
left join tile3_clicks detc
on mc.field5 =detc.field5 and mc.field2 = detc.field2 and mc.field6 < detc.field6
left join tile3_success detUs
on detc.field5 =detUs.field5 and detc.field2 = detUs.field2 and detc.field6 < detUs.field6
left join tile4_clicks helpc
on mc.field5 =helpc.field5 and mc.field2 = helpc.field2 and mc.field6 < helpc.field6
left join tile4_success helps
on helpc.field5 =helps.field5 and helpc.field2 = helps.field2 and helpc.field6 < helps.field6
left join tile5_clicks gcc
on mc.field5 =gcc.field5 and mc.field2 = gcc.field2 and mc.field6 < gcc.field6
left join tile5_success gcs
on gcc.field5 =gcs.field5 and gcc.field2 = gcs.field2 and gcc.field6 < gcs.field6
left join tile6_clicks gcp
on mc.field5 =gcp.field5 and mc.field2 = gcp.field2 and mc.field6 < gcp.field6
left join tile6_success gcps
on gcp.field5 =gcps.field5 and gcp.field2 = gcps.field2 and gcp.field6 < gcps.field6
left join tile7_clicks gcd
on mc.field5 =gcd.field5 and mc.field2 = gcd.field2 and mc.field6 < gcd.field6
left join tile7_success gcds
on gcd.field5 =gcds.field5 and gcd.field2 = gcds.field2 and gcd.field6 < gcds.field6
group by 1,2,3