Mainly if you use keywords in Google. "Work online" "online job boards" or just go to indeed.com for example and search online jobs. Search Google for best online jobs or whatever keywords

You could look into being an English tutor. Italki, for example, let's you set your own schedule and rate. You communicate via Skype with people and money is handled through the website. With that, people have to choose you from the available pool. There's also other similar ones, where you can log in and you get in a queue that fires customers in turn. You get your student and do conversation practice or work on whatever they ask and then after you wait for your next one. I believe they pay 8-10 usd per hour.

If you have some area of expertise you might could do consulting online. There's also sites where you can build an online educational course and people can purchase your lessons.

There's social media management jobs, data entry ...

You really just need to search job boards and blogs and such and should be able to find something.