As others said, your post is very light on detail on what you shoot, how much, and what you do with the photos. These would help us give you better guidance.
FWIW I used to shoot 35mm film, moved to digital, and now am doing digital small formats (MFT and APS-C), and film MF and LF. Very different formats for different subject matter and end use.
Without getting too much into film vs. digital debate, the difference is big. Image quality of an MFDB rivals that of MF film for sure, and many say equals 4x5, 5x7 or even 8x10. You'll note that when people here talk about image quality it's mostly pixel peeping, and often imperceptible differences are deal breakers for some. For normal viewing distances at moderate print sizes MF and LF will give enough IQ for almost anyone, digital or analog. If you print large and/or stick your nose to the prints you'll be chasing that IQ holy grail forever - and pay the summer houses of some very happy sales guys.
Nevertheless, digital is much faster to work with, and depending on how much you shoot it might be cheaper surprisingly soon despite the often outrageous initial investment if you buy new. One can get a used MFDB for 10k EUR or so, with a lens or two. But if you don't shoot a lot, 9k-40k buys a lot of film - savings from buying an MF or LF film system instead of MFDB system.
Film has a different look, mythical qualities, and these days one has to really like the process to be bothered with it. Step up from 35mm film to MF is huge in image quality, and another huge step up to LF. Cost per frame also goes up proportionally, as does hassle per frame. Then again one probably doesn't shoot MF or LF like they shoot 35mm or any digital. It's a much slower approach by necessity, but also by choice. Some like it, some don't, some don't care either way.
You can find most films in MF or 4x5 for reasonable prices in Europe; if not locally, you can order online. 5x7 and 8x10 are extremely expensive, and especially 8x10 films are getting rarer and rarer - even worse for color. I'd imagine most places which develop 35mm know where to send MF or LF film to get developed if they don't do it themselves. You can of course develop B&W yourself.
Getting film scanned gets very expensive very soon. You can get a decent scanner, such as Epson V700, for a few hundred euros which will get you excellent web-sized scans, good medium-sized prints or larger proofs. Scanning yourself does have a learning curve, although not worse than learning Lightroom, for example. For exhibition quality you'd probably want to get drum scans, which are tens of euros and up per frame from LF. Expect to spend lots of time spotting the scans regardless of who does them.
Largeformatphotographyforum is an excellent and very busy forum with plenty of info dedicated to LF film.