I just added a powerline connection to my computer in case the wifi crashes again. It's really slow though and should only be used as a fallback.
When I'm connected to both the powerline ethernet and the wifi, it will communicate via ethernet. But I want it to use the wifi connection instead.
 There is this answer from 6 years ago which kinda looks like it would help: https://unix.stackexchange.com/a/212835/227331 but it uses ifconfig and I haven't been able to do this via the ip command
Here is it for reference:
$ sudo modprobe bonding
$ sudo ifconfig bond0 192.168.0.1 netmask 255.255.0.0
$ sudo ifenslave bond0 eth0 wlan0
I tried to translate the mentioned command using this tutorial: https://www.andreafortuna.org/2017/05/22/how-to-use-the-ip-command-instead-of-ifconfig/
 and came up with sudo ip address add 192.168.0.1/16 dev bond0
sudo ip address add 192.168.0.1/16 dev bond0
 but it says Cannot find device "bond0"