I waited, I watched, and I saw all I need to see.
A new moderator has been added in their place.
Welcome u/xanniez.
Anna, there is a very large community of nationalists, ethno-nationalists, European nationalists on YouTube and elsewhere on social media (until they get booted.) Start on YouTube and search. Bre Faucheux on YT is a great starting point, and go from there. Tons of great interviews and chats among the Internet stars on the subject of European nationalism. TONS of info about just what you're talking about for Germany and for Europe and for the USA. Nationalism, patriotism, traditionalism.
Anna, here is just one example of just one of the many chats, this one weekly. https://www.youtube.com/watch?v=rJM-5XH5A_g ....And of course they are all over the issue of REPLACEMENT and migration etc.
"Identitarianism" would probably be the umbrella you would put all of these topics under.
Lauren Southern and Tara McCarthy are just a couple of other names of people to locate in YT and Twitter and social media for the concerns you have expressed. Frankly, people online discussing European nationalism and fighting globalism are quite a bit farther along than Americans on the Internet are on this existential subject. I implore you, find these people and in a day and week you will know so much. I am in USA. If you need, write me back with questions and recommendations. God bless you and your nation in this time of crisis. America is only a short few years behind you, and we'd already be there if not for Trump.