Looking to get a visa and later a citizenship in Luxembourg soon any help

[glover33]

So while I'm researching I wanted to know some things any advice is appreciated 1. How do I keep my visa going for 5 years, like what would be the most reliable ways to keep it going 2.to get a citizenship I think I need to be at an at least b1 level in Luxembourgish to get a citizenship however I also read that the most commonly spoken language there is French and a few other sources said that the paperwork I'd have to fill out to get the citizenship might also be in French so do I have to learn both 3. Would it be possible to get a citizenship with just learning French and not luxembourgish because considering French is probably easier to learn than Luxembourgish and I don't think I could learn 2 separate languages in 5 years and I feel like I'd have to know them by the time I get a visa so that I could get by there even if I think 70% of people there speak English and 4. Are there any requirements I'd have to have to get a visa in the first place like education level, criminal record, etc