Can anyone suggest something, that are already completed and a awesome story
A Complete Novel
Konosubarashi no Sekaii no Shukufuku wo!!
It's already completed full of Awesome EXPLOOOOSION.
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LazyCha All the Asian completed novels are listed here... https://www.novelupdates.com/completed-novels-listing/
As for my suggestions.. I would ask you to go for ISSTH and Coiling Dragon(These are pretty generic in the suggestion system)
As for the unknown ... go for World of cultivation and it has a manga, but its not fully translated for some reasons...
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UnhingedTaboo okie, i will look to it, thank you 
JanMeng thank you, i will read it