I would recommend a professional installer for sure…
The xG3 is a notably larger needle (and implant) than the other x Series implants. It’s going to be a bit rough, even in a “normal” location like L0 or R0.
Fingertip installs with the xG3 can be really tricky depending on the size of your hands/fingers, and you risk major nerve damage if anything goes wrong. An experienced installer is much more likely to minimize damage during install, as well as managing things better if it goes wrong (such as if your fingertip ends up being too small).
Looking at the other side, it’s definitely possible to manage a decent install at home, with a somewhat inexperienced installer. @mrln managed to install one completely by themself in December of 2020, and managed minimal complications.
If you do the install at home, and things don’t go as planned…
haha
(also, if you add your general location, there’s often a lot of installers not on the map that forum members can recommend to you 
)