Looking for a side hustle

I currently work part time (20 hours a week) and am looking for another job for extra income. I'd like to look for remote work, as this can have the option of more flexible working hours. I've tried Upwork, but I don't like the idea of having to pay for credits to apply to jobs (at least I think that's how it works?). I know about Fiver as well, but I think there may be too much competition on there.

I've also applied to various transcription sites with no luck.

Does anyone have any other ideas? I have a background in office administration, but it doesn't necessarily need to be related to that.

Literally any suggestions are welcome (like I've heard of an app for cat sitters, for example lol).

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