Is it best to use car rental insurance or my car insurance when renting a car?

I am going on vacation for the first time in over a decade! Should I use my car insurance or the rental company’s insurance? Thanks for the answers!

Is renters insurance for people renting a place or for the lanlord who rents out their place?

I’m a bit confused. I was told when I refinanced my condo that I need renters insurance for my condo. We rent out our apartment to tenants. I’ve been doing some research and only see info on renters insurance for the tenant. I have condo insurance also. Thanks.