Pygame rotation sprite pivot on moving displayed surface

Question

so I tried to add the weapon to my game and rotate it on a pivot point looking to the mouse, I achieved to do it but I have an issue I can't resolve, when I walk with my player, after I walk down around the middle of the map the rotate angle looks to become wrong.

I link you a gif for a better understanding.

Here is some part of the working rotation code :

import pygame, os, math
from weapon_constants import *
from level_constants import *
from pygame.math import Vector2

class Weapon(pygame.sprite.Sprite):
    def __init__(self, game, name, label, x, y):
        self._layer = WEAPON_LAYER
        self.groups = game.all_sprites, game.weapons
        
        pygame.sprite.Sprite.__init__(self, self.groups)
        self.options = WEAPONS[name]
        self.label = label
        self.game = game
        
        self.file = os.path.join(os.getcwd(), DEFAULT_WEAPON_IMAGE_PATH, self.get_option('image'))
        self.image = pygame.transform.scale(pygame.image.load(self.file).convert_alpha(), DEFAULT_WEAPON_SIZE)
        self.original_image = self.image
        self.rect = self.image.get_rect(center=(x, y))

        self.offset = Vector2(25, 0)
        self.pos = Vector2(self.rect.x, self.rect.y)
        self.angle = 0
        
    def get_option(self, option):
        if option in self.options:
            return self.options[option]
        
        return False

    def update(self):
        self.pos = Vector2(self.game.player.rect.center)
        rel_x, rel_y = pygame.mouse.get_pos() - self.pos
        self.angle = (180 / math.pi) * math.atan2(rel_y, rel_x)
        if self.pos.y > pygame.display.get_surface().get_width() // 2:
            print('bad rotation happen \n pos_y : {}, \n angle : {}, \n mouse_pos : {}'.format(self.pos.y, self.angle, pygame.mouse.get_pos()))
            pass
        self.rotate()
        
    
    def rotate(self):
        self.image = pygame.transform.rotozoom(self.original_image, -self.angle, 1)
        rotated_offset = self.offset.rotate(self.angle)
        self.rect = self.image.get_rect(center= self.pos + rotated_offset)
  

Here is the first output (I saw it was around half width of the map) :

bad rotation happen 
 pos_y : 452.0, 
 angle : 23.962488974578186, 
 mouse_pos : (450, 468)