That can be a good solution at least if electricity costs are not a big deal. If power is expensive in your area, it might be worth to buy something more power-efficient, like a raspberry pi (assuming they’re not completely sold out right now).
No company is just going to host a server for you for free, a (virtual) server for running nextcloud will cost you at least a few bucks a month. As others have already said, you can run a server at home on your own hardware, but this is also not free (hardware cost, electricity, etc.) and you will additionally have to deal with any hardware issues & replacements yourself.
That really depends on how exactly the public broadcasting is funded. In Germany for example, this happens independently from other state expenses so there’s no way that the government can directly controll the press. For this reason, the press tends to be critical of all political parties, including the ones currently in government.
From Wikipedia:
Fascism is a far-right, authoritarian, ultranationalist political ideology and movement, characterized by a dictatorial leader, centralized autocracy, militarism, forcible suppression of opposition, belief in a natural social hierarchy, subordination of individual interests for the perceived good of the nation and race, and strong regimentation of society and the economy.
The only part that could vaguely be associated with capitalism (in a democratic country) is “militarism” and even then this is only the case if you mainly focus on the USA. The fact that fascist countries were running free-market economy is also not really a point since that was (and is) the case for a large part of the world.
“subordination of personal interest” and “strong regimentation of […] the economy” is the opposite of prototypical uncontrolled capitalism. Saying that capitalism is fascism is just as stupid as saying that fascism and socialism are the same (“bUT it wAs cALLed naTIOnaL soCiaLIsm”). Using the word “fascism” for everything you don’t like just makes it lose all meaning.
I think this should work assuming that the game and mods are compatible with proton. Also, you don’t need an external drive, you can access the windows partition from linux (probably not the other way around though since linux understands NTFS but windows doesn’t understand ext4). If there are any issues, maybe try the “Verify Game Files” feature of steam. This might remove the mods but at least you don’t have to download the game again.
I think Plex is not open source but is there any reason against Jellyfin? As far as I know, they also have apps for most smart TVs in case that’s what you mean by navigating with a remote.
This might be what you’re looking for. When translating between languages other than English (German - Spanish in my case) the data can be a bit lacking but it generally works really well.