"you loosed" .... ?

Base +6, Poser27 +6

"Did you really thought" => "did you really think"
the verb "do" is already conjugated in this sentence, as such you have to use the infinitive of think due to how simple past works

"Prideful" => "Proud"
prideful is an adjective to describe a person, you are prideful, you are "Proud" of something.

"You loosed" =>"You lost"
you "lose" a battle, you "loose" a pussy with a big fucking futa dick

"Since a while ago" => "For a while ago"
What you wrote would have been correct 200 years ago, the language has changed unfortunately.

"Your ass became all loosen" => "your ass became all loose"
"Loose" is an adjective, you can see it by replacing it with another and seeing If the sentence still works : "your ass became all blue"

"This cheeky boobs" =>"These cheeky boobs" fortunately she has more than one and as such we have to use the plural form of "this"

"For a perverted like you" => "For a pervert like you"

Base +5, D. Hart +7, Dnkz +24, ΩSyn +14, flambi +10, animeto +23, icesonic +8, user00 +8, caveman84 +6, Shallowhite +5, Poser27 +6, arutanate +6

Thank you for the translation and for making the proposed corrections to it! Also, thank you for using the Booth version instead of the DLSite version; works uploaded to Booth tend to have less intrusive censorship from my experience.

By the way, there's another doujin by UMA on here that contains cock docking that you might be interested in picking up and translating:
/g/1237461/19601b2763/

UMA also recently released a doujin that hasn't been uploaded here yet that also contains some cock docking (warning: it also contains scat):
https://booth.pm/en/items/1989161
https://www.dlsite.com/maniax/work/=/product_id/RJ284866.html

On an unrelated yet kinda related note, 148bpm recently released a masterpiece of a cock docking doujin that is more than worthy of being uploaded here and translated:
https://booth.pm/en/items/2052536
https://www.dlsite.com/maniax/work/=/product_id/RJ287251.html

Once again, thanks for the translation!

Base +6, user00 +8, D. Hart +7, arutanate +6