When I restarted DE shaving after almost 50 years, I had some difficulties but not like you described happened to you. The great advise given above is very sound and gained by experience. My only recommendation is like one post and that is to start with a Tech or a Super Speed. Much milder shaving tools than any modern razor. Save your Futur, they are great shavers, after you get your shaving procedures down, you will be glad to have it.
Member of the BOTOC, Alliance of Merkur
~Gil, U.S. Navy Retired (1984)~