For me, I only have front facing.
There is only one. Garmin dashcam. Best there is. I got the 47.
Garmin Dash Cam 47, 1080p, 140-degree FOV, Remotely Monitor Your Vehicle and Signature Series Cloth
https://a.co/d/5IVIeMN
As for other views, why give more ammunition that may go against you……just saying……
You need the front to protect you from someone in front car slamming brakes for no reason or you’re braking for a deer (as examples). Front collision is mostly your fault…so you want evidence to free you from that if it is not your fault.
Rear collision of your car is rarely your fault. It is up to the guy/gal ramming you to disprove their negligence. No need for cam there.
Interior cam is just useless…and can only be used against u.
Side view…cool…but unlikely that it will ever help you. A wide angle front cam will be just aa important.
Just my view, YMMV.