For my diary_ピザ食べて後悔してる

:) Please correct my English for natural & casual expression, thanks!
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Recently, I often eat  pizza which is leftover＜残ろのやつ？i prefer "made"(笑)＞ by a Italian store next to my workplace after working.
I have to lose weight actually but I  love eating pizza so much that i can't handle my appetite.
After eating I regret it.

Wanna stop eating  pizza anymore...