Thanks for the detailed feedback. I think I am also leaning towards Opnsense right now. I think for a relative newbie like me, that would be better.
I know that I can build and host everything on my own on a pure Linux distro, but I would like to have some life left at the end of the day and not spend days of building testing and debugging network related problems.
By the way another user suggested that with VyOS you can build an LTS target yourself and that they provide build instructions.



















Check the second hand options. I bought a brand new Pixel 10 Pro at the beginning of the year for 600€ from the second hand market from a guy who got it with his contract renewal for free. I think back then the regular Pixel was costing 500€, so I can imagine that you can find a Pixel 9 for 300-350€ in a very good condition.