Sure. Some websites might run programs where they need people to read and rate fanfiction for quality control or popularity assessment. They may offer payment in return. However, these opportunities are not very common and might require you to meet certain criteria like having a good understanding of different fandoms and being able to provide detailed and constructive feedback.
You could also try self-publishing on popular platforms and monetize through subscription models or ads. But it takes a lot of marketing and building a reader base.
You could also self-publish on platforms like Amazon Kindle Direct Publishing. Earn money through royalties based on sales. Another option is to enter writing competitions that offer cash prizes for winning entries.
Yes, manga cleaners get paid. However, the pay can range from a modest amount to a decent sum, depending on various factors such as the quality and quantity of work, the reputation of the cleaner, and the budget of the manga production.
Getting paid for fanfiction can be tricky. You could explore self-publishing options and promote your work through social media to attract potential paying readers. But be aware that many fanfiction works are subject to copyright restrictions, so make sure you're not violating any laws.