Make 9 alts / or any amount based on your slots / (warden is easy mode), get premium.
Cold storage - 2 min (13 gold), fast kill even with 6 story chars
Heavens Mandate - 2 min (13 gold), join moml party in party recruit, high levels nuke it fast
Celestial Basin - 1 min (0,5 gold), pop that mini boss
random daily (event) dungeon - 5 min (5-7 gold), its fast to kill SM and down even with 6 story chars.
At this point you have the 3 dailies (5 gold for daily bar + 1 gold for shard), + a material chest (if there is a event box like now, even more).
Its like 40 gold for 10 min + material, and most of the time you clicked like 5 times or run after others. Now with 1 main and 9 alt chars its 400 gold.
In a month its 12000 gold for 2 hour play / day. And you can go higher, join the all welcome weekly + bt, or if you not noobie, you can kill every day that Yeoharan for 12 gold and 19+20f for another 5. Its fast too. And we are above 15k + even and more mats. And tbh its a very low effort "bot work".
Most of the players doing this, thats why you need to wait 10-20 mins to pop a non daily dungeon in F8.
If you have 5 char slots, just go for Yeoharan (12g), 19f+20f (5g) and MSP 1-3 (13g).