The best way to confirm or rule out a hardware issue is to flash the most recent stock Samsung manufacturer's OS for your S5 SM-G900F.
This will also update the vendor's firmware, modem, bootloader etc.
Their paywall policies varies apparently randomly depending on the device & age of the OS but I used both sammobile.com & updato.com to download stock Samsung OS. Some users recommend samfw.com.
They all have flashing instructions using Odin3 in their respective download pages.
It does not matter for which country as long as it's made for your exact model number.
Usually the more recent, the better.
Test thoroughly while on stock Samsung OS & write down or screenshot the working APN settings.
Then install the most recent TWRP version, backup the EFS partition then flash LineageOS.
Format Data is better than a simple wipe Data if you want a really clean install.
***
Don't select install the
TWRP app when offered in TWRP as it may cause a bootloop.
***
"...Installed "open_gapps-arm-11.0-nano-20210925.zip" (no errors)" - Try MindTheGapps instead which has similar features as Nano:
https://wiki.lineageos.org/gapps.html
If you look at the *Thanks and Credits* chapter in the bottom of the page of
https://gitlab.com/MindTheGapps/vendor_gapps there is a bunch of LineageOS devs mentioned as testers & other contributions.
The same guys that you can find in
https://wiki.lineageos.org/contributors.html
These extra apps included in MindTheGapps but not in Open GApps Pico can be disabled in Settings > Apps & notifications > Show all > 3-dots > Show system:
- Android Accessibility Suite
- Google (search app)
- Markup
These included in both Pico & MTG can also be disabled in their respective app's info:
- Android Auto
- Google Text-to-speech Engine
- Market Feedback Agent
The rest are core GApps.
***