Mod Manager to install all mods for Fallout 4, previously Nexus Mod Manager; now Nexus. https://www.nexusmods.com/about/vortex/

Mod/Extension that literally every single mod requires https://www.nexusmods.com/fallout4/mods/42147

This mod will enable you to get Gyro to work https://www.nexusmods.com/fallout4/mods/47359

Open Nexus, Install it, then right click Buffout 4 and "Open in File Manager"
Edit the Buffout 4.Toml and set the highlighted line to "true"
(A-Z):\Vortex Mods\fallout4\Buffout 4\F4SE\Plugins

Make sure your in-game sensitivity is set to the lowest value (you will change sensitivity via Steam Controller Configuration)

In Steam Controller Configuration, make sure Gyro Behaviour is "Mouse" & Right Joystick Behaviour is "Joystick Mouse"
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Also if you want to actually strafe sprint, I recommend adding fSprintStopDirectionThresholdDegrees=80.0000 to [general] in Fallout4.ini

You can also enable Gyro Controls in Fallout New Vegas, to do this install lStewieAl's Tweaks and Engine Fixes and by enabling Simultaneous Input in the Tweaks and adjusting the settings appropriately to not overlap binds (It works much better because you don't have to do nearly as much tweaking with Steam Configuration!)

Why can't I just have a gyro modifier enable on Left Trigger or another button?

it spazzes the camera when inputs are being dynamically swapped so you have to make the entire controller act as MnK or make the right stick act as a mouse, if you made the entire controller act as a mouse you lose out movement intricacy, if it didn't make the camera freak out you wouldn't have to do this nonsence


-Pip boy Map
The pipboy map was bad enough on controller with how it imitated a mouse, it definitely doesn't get prettier when you mix both inputs

-The Perk Board (sometimes)
Sometimes bugs and registers mouse input when your using the DPad (I dunno) which makes it stay where the mouse position is idling

-Lock picking
The simple fact that your changing the Right Stick to Joystick Mouse means it just won't work unless you know how to swap to Controller Joystick when using Lockpick

If you have solutions for these via mapping, please share!

Here are my in-game settings for context
(Mouse)


(Controller)

For Steam Configuration, I make right track pad reload, with square now being my modifier, and left track pad as quick save, the changes shown below is quick save and reload being changed to my preference