I'd say 90% of the posts you read by a company CEO, CTO, or COO are in fact written by someone else and at least half the time in those cases they were written by someone that doesn't even work there. My first professional writing gig was for a German industrial paint company entering the US market. I earned $50 for a 600 word post and wrote them 3 posts per day. Related: I nearly failed chemistry in high school and know nothing about paint.
Until about a year ago I had been blogging for others for close to a decade. 4 or 5 years ago I surmised that I probably had someone in the neighborhood of 4 million words out there on the internet, mostly applying to subjects I have no training in. I just like to write and people will pay for that. I've easily made $400-$1000/month writing posts for businesses as I have a beer in the evening and my wife makes dinner.
Businesses of all types will pay between $500 and $1000 for a well written, well researched blog post between 800 and 2000 words. Can you create a technical whitepaper or even an eBook/lead magnet with citations and some science in it? That STARTS at $2000.
That means companies (like mine) that have those opps are more than happy to farm them out to someone else for a few hundred bucks. You can easily command a dime per word if you are reliable and write with quality. In fact, I don't have $1k of budget for you/anyone right now but I'd be glad to pay a dime a word starting Monday for someone to start pumping out all the posts for my business that I've been meaning to write but - wait for it -simply cannot find the time to prioritize the work.
THe content creation/professional blogging space is still full of opportunity and based on the short post you have here it looks like your English is just fine.
"So where do I find the work?" Craigslist - tons of opps, tons of competition Fiverr Blogmutt and similar Content co-op sites Cold approach - send me an email I'll send you the exact instructions for doing this.
Good luck.