You say the Settings App is crashing when opening “Network and Internet”?
Then you could try to reset “Reset Wi-Fi, mobile & Bluetooth” in the System → Reset Options as shown in Reset your /e/phone to Factory Settings (do not reset to factory settings, only the first option)
If this does not help:
make the settings app crash a few times (to make it more obvious later in the logs) and create a bugreport, one of us filters out the relevant log lines for you and creates an issue with it.
Here is a help text on how to create the necessary bugreport zip file after your crash occured and options to share it. I updated it with current screenshots: [HOWTO] Create a log (a bug report) easily without computer - #10 by tcecyk and you can also follow the original descriptions.
Share by mail (my username at @e.email) or move the zip file into a synced Folder and share a link to it from the web interface.