Ok, good to know, so could there be any alternatives? I've heard about cloud mining, but I'm not entirely sure how that works.
Buy ASIC miners which are dedicated mining hardware. 99% of cloud mining services are scams so stay away from them.
Though even when buying mining hardware, you need to calculate very carefully because the difficulty to mine is rising and profits going down constantly. I think a lot of miners are happy when they get their investment back at least.