The bars on the 7 series don't come out, so anything that requires taking them out (whether that's to replace them with other pins, or to slide them through a band) isn't going to work. Things like these: https://www.amazon.com/DuiGong-Compatible-Garmin-Replacement-Buckle-Pink/dp/B089M9DGP6/ https://www.amazon.com/DuiGong-Compatible-Garmin-Replacement-Buckle-Pink/dp/B089M9DGP6/ https://www.amazon.com/Fintie-Premium-Adjustable-Replacement-Smartwatch/dp/B07D8RWXJF

Anything with the quickfit attachment should work, or anything that can slide between the bar and the watch case, such as this: https://www.amazon.com/LDFAS-Straps-Compatible-Instinct-Smartwatch/dp/B09CV34KMV