system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] In every iteration of Star Trek it's always the bridge crew that goes down to the planet and does stuff. Isn't that we'll... Just really dangerous?

The entirety of the command staff, plus usually the only doctor on the ship goes down to the dangerous world and nearly always gets almost killed.

Shouldn't they send some from of F.E.A.R. squad to do this? People with combat and diplomatic training?

What happens if they all get killed (plot armor not withstanding), does this ship have a secondary command staff on standby for this?

For those who forgot, FEAR is First Encounter Assault Recon.
gpt
Starfleet fosters a culture of cowboys among their exploration ships. These guys worked their entire careers to lead the Federation's best and brightest into the unknown - to discover new life and new civilizations - so damn straight they're going to be the first ones down on an away mission. They didn't come out all this way just to stare at reports of other people having exciting adventures.

Once they've had their fun, then specialist teams go down to do actual studies of whatever man-eating plant killed the obligatory redshirt this week.

And yes, should any of the senior staff become incapacitated, there are established chains of command for both the ship as a whole, and in any given department to take over those responsibilities.