Also, marketers don't work in a vacuum, they are hired by managers and business owners to create exposure and help create growth. Of course marketers work for money, we all do and very few us do work that actually help customers in a profoundly meaningful way no matter how we rationalize our work.
Safety razors are still being made by all of the major razor manufacturers. Its not that "they didn't market themselves properly" its that the companies that were making them decided its better to sell people a cheaper, shittier razor in an even shittier plastic frame for several dollars a piece rather than sell safety razor blades for 10c each. They intentionally don't market their safety razor products at all.
There are smaller companies that have started making them because there's a very small, niche market for safety razors. Perhaps some of them have issues marketing correctly, but the biggest issue is that they are competing with giant companies that thoroughly convinced the world that an inferior product is better decades before these tiny boutique companies ever existed.
Maybe I have been misled by people who was in turn misled by Gillette marketing, though. I must confess I haven't really tried them.
With an old-fashioned safety razor, you have to use a lighter touch to let it glide across the skin, and you have to keep the correct angle yourself. It does take a bit of practice, but unless you drag the blade sideways or put pressure on it, you won't be in any great danger of cutting yourself. Just go slow and don't try to shave long strokes in one go.
Safety razor handles come in a lot of different designs, and they vary by how much of the blade they expose and how steeply they angle it. Some people like the really aggressive designs to shave in one pass, but they also tend to grab at coarse beard hairs. I've had a Merkur HD for ages, and I think it's a good starting point. There's a nice heft to it, which feels reassuring.