My one camera is usually facing forward, either on my road bike's stem or my helmet when riding my hybrids.

But I should get a rear facing camera. Most incidents when I've been struck by vehicles while riding my bicycle or motorcycle were from behind, usually at stop signs or traffic lights. I've had many close calls and near misses from the front, but most of the actual strikes have been from behind. In every case the driver claimed they didn't see me, even when I was riding a rather large motorcycle.

Offhand the only impacts I can recall from the front occurred many years ago, both in 1978 in Washington DC:

• A driver in the opposite lane at a four way stop sign intersection turned in front of me and I landed on the hood of her car. I'd made eye contact before proceeding but she claimed she didn't see me.
• A limo doored me near the US government buildings district. The ambassador or diplomat who doored me wasn't very diplomatic in his response to my bicycle inconsiderately scratching his limo.