Welcome,sorry to hear about your experience with what sounds like a dull blade. We spend alot of bandwidth talking about "shave ready" razors. Unfortunately, short of buying the blade from one of the known honemeisters AND using proper stropping technique to prep it for shaving- you are kinda rolling the dice.
Your experience with a butterfly razor had given you enough experience to have had at least a "decent" shave.Your knowledge of blade angle etc. still won't make up for a poor edge.
I know from my own experience, that even with a truly SHAVE ready razor-just doing the sharpness tests(short of actually shaving with it) can dull it enough to cause issues.Prior to shaving, I NEVER touch the blade prior to shaving. Stropping technique-although a straightforward endeavour: ON PAPER

can also be an issue. Even slightly rolling the edge or using excessive pressure can also dull it.
Using a 10x loupe is enough magnification can show a chipped blade that will turn your face to hamburger.If the blade has been allowed to strike the faucet,or closed against the scales can also spoil what WAS a keen edge.
Short of obtaining another razor, perhaps another member in your area might be able to offer some assistance. Don't be discouraged, its happened to all of us.
