Not surprising. You have no safety mat or adhesive stickers to allow for purchase on surface with a low coefficient of static friction.

你既没有防滑护垫也没有不干胶贴纸导致浴缸表层静摩擦系数低，因此摔倒也不足为奇。

youdao

At first the National Highway Traffic Safety Administration (NHTSA) and Toyota thought that a badly fitting floor mat could have jammed the accelerator open.

起初，美国国家公路交通安全管理局(NHTSA)和丰田认为，不合适的脚垫可能卡住加速器，使之无法打开。

youdao

The Taverham High School pupil is believed to have been injured when she landed head first from a pommel horse on to a safety mat on 12 March.

BBC: Taverham High School pupil dies after gym accident