Photopea.com was able to keep their hosting costs down to about $50/yr while still serving 7 million people[1]. Their website was hosted statically at a size of 1.8 megabytes. Yours is different of course because you scrape Wikipedia regularly, but there may be a cheaper solution than your current setup out there for you fyi
[1] https://old.reddit.com/r/IAmA/comments/i8j5te/i_made_a_free_...