Location: Go to the very end of this Underground area and enter the Maintenance Wing. Look for one of the Ziplines with a Breach Door nearby.
What you'll find: Inside this Breach room, which has better loot potential than common areas, you can find:
Medical Bag
Numerous Loose Loot Spawns on shelves
Blue Little Cases (like the Lance Mix Tape we found on our first visit)
Square Breach Boxes (sometimes two of them Spawn)
This area often has low PvP risk, provided you don't go too deep into the security area where many players are. Also, on the other side of this door, there are Red Lockers and Trash Cans that provide good loot.
2. Spaceport: Vehicle Maintenance
This area has lower risk than Control Tower, Arrival Building, or Departure Building.

Additional Tip: Right above this room, there's another room. On the same path, there's a Breach Door to break which has less loot (like Ammo Case, Loaded Desks, and Backpacks), but it's worth checking when you're in the area.
3. Dam Battlegrounds: Power Generation Complex
The Power Generation Complex is in the Underground section of the Dam Battlegrounds map and requires a Power Rod for access (which is easy to craft).

This area currently has low risk and the grate Solo Loot Locations in Arc Raiders, but it may become more competitive over time.
4. Buried City: Secret Apartment Spot
This Place is crazy for Looting, whith low risk for PVP! i can say this is a perfect Solo Loot Locations in Arc Raiders.

Night Loot Tip: If you come here at night, you'll see even more Loot, including an Ammo Case and a Grenade Case in the corners.
5. Stella Montes: Assembly Workshop
This area is intended for two Rocket Thrusters and is less frequented due to darkness.

Location: The Assembly Workshop.
Advantage: They are often unlooted and easily accessible.
What you'll find: With a bit of Parkour and slow walking, you can breach these Rocket Thrusters and obtain Exodus Modules and other Purple Materials.
Important Notes:
First Thruster: You can access the Breach by jumping onto it.
Second Thruster: To access this one, you need to jump on a box and breach it from the side. This one is the easiest.
After looting these two Thrusters, if you have a Raid Hatch Key, you can Extract quickly and avoid most conflicts. With this method, you can farm a lot of Purples in Stella Montes.
I hope this Solo Loot Locations in Arc Raiders Guide can help you to enjoy the game and have a looting journey without any trouble. if you know any place that are good for looting solo ride that in the comment. Good Luck and Have Fun.