I once went down this rabbithole ("I use LTSC for years might as well buy a legit copy finally") and... it was almost impossible. You need to buy at least 5 licenses through volume licensing but you also have to be a business (can't buy it as a natural person). Then there were some other thing about standalone version, upgrade, subscription etc.

So yeah LTSC was never meant to be available for single desktop users at home yet it's best version of Windows available.