I use a one and done Nagoya mag mount in my vehicle, connected to a standard Baofeng handheld unit with a palm mic.
This is the kit: low profile antenna, integrated mag mount, and a good run of decent coax and adapters:
https://www.amazon.com/dp/B09TPZ221K
It works well enough for my use range when mobile (Whidbey Island to south Seattle) with the only real bad spots in lower Mukilteo.
There's also the popular Midland NMO mag mount, that will let you connect a whip, ghost, or whatever NMO antenna you want to try:
https://www.amazon.com/dp/B07CRBV71V