Seconded. I run two small websites with hundreds and sometimes thousands of PV per day on a server I am already using for other things. The only thing I really pay for is the domain which is a drop in the bucket anyway. I might give a random shoutout to Cloudflare here as well: Not everybody agree with their way of doing.things but from my point of view they've really helped to cut out a lot of work for personal websites.

To my knowledge, most people who make money on their websites are either big enough to monetise with sponsorship/subscription, or they'd run a number of smaller sites of no consequence nor unique content anyway. The latter has no real reason to exist.