Feedback Cannon Damage Question?

I have been here for 8 years and put alot of time when I can be on to collect and upgrade my ship with in-game currency and not using money too often...since,it is expensive...
better yet why not offer more options to get rid of the 55's and 60's for something of equal value in return like pearls or crystals and or another cannon..

no *edit* just exchanging the cannon in return for another cannon without adding any items to exchange them with just to sell or trade them off....or sell in general and get money in return or crystals...

I have these cannons and skills

Topcastle 5/8 Gunpowder Flask
Forecastle 7/8 Cannon loader
Aftcastle 5/8 Cannon storage
Voodoo castle 2/8 voodoo bundeling

basic skills 4-1-1

ogun
6/6 explosive alchemy

Agwe
rocket shield 1/6
agwe armor 6/6
swift remedy 2/6
monsters blight 1/6
hit point hoard 1/6
agwes aim 6/6
destruction reach 5/6



28 dev
25 lvl 2 voodoo
37 firestorm
27 doomhammer
11 lvl 5 60's
5 lvl 4 voodoo
184 voodoo
120 lvl 3 60's
193 lvl 60's
249 lvl 5 55's
304 admirals

I hit anywhere from 30k ish to 40k depending on ammo used...and cannons..sometimes in the mid 20k ish area...

Why is it damage is not as expected?

[Edit - inappropriate language]​

 

hi you need also good gems.also need more cannon slots like me i hawe 340 cannons on my ship others players hawe i think max is 411.if want hit more need better guns.

 

I have 265 cannon slots