get yourself aftermarket case from china with proper opening that allows for use of the slide door without obstructions. costs like 6dollars. Im satisfied with mine.
Search "gopro frame" on any website like gearbest or aliexpres
Gopro Hero 7 Black
Gopro Hero 3 Black
Previously: Gopro Hero 5 Black / Gopro Hero 3+ Silver / Feiyu G5 gimbal / Xiaomi Mijia 4k