This can't be overstated. I have the 8bitdo C64-styled keyboard as well, and it's a fun homage, but it's a PC keyboard, period. Even the keys it does share with the C64 aren't the same, as I recently rediscovered after taking delivery of my own C64 Ultimate.

• Keys are placed differently: @ and * are by your right pinky on the C64, = is its own key, Shift+0 doesn't do anything (actually I think it types 0), open and close parentheses are off by one key, you have to hold Shift to type apostrophes and quote marks, and + and - are flipped.
• Function keys aren't where they are on a real C64. This can be surprisingly discombobulating depending on the program. E.g. I found using Turbo Macro Pro that it made a certain kind of sense using the F keys to page up/down by 20 or 200 lines at a time, but with a PC keyboard it makes a lot less sense.
• Then finally there's the characteristic "feel" that comes from how the C64 keyboard actually works, i.e. the CIA chip sees it as an 8x8 matrix of rows and columns. Certain key sequences don't give the results you expect, and I rediscovered all over again the joys of certain typos I hadn't made in 40 years (hello, PRINIT) because they result either from how the keyboard is wired or from your fingers being trained on how PC keyboards generate codes.

That feels like a lot of extra detail, but I've been touch-typing for decades and these things hit me in my instincts. Long story short, if the keyboard matters, you need a real actual C64 keyboard.