My understanding is that an example of a hypothesis, is that users want a feature. The experiment is putting that feature in front of users, or performing user research, which which then allows you to validate if a hypothesis is true or not.

I am intrigued. Could you elaborate on this with some examples?

To clarify, when you say freelancer, do you mean on a part-time basis? Or do you mean having a contract and working on a full-time basis for that client? Also, where are you based? I’m happy to give advice as a UK based contractor, who does a tiny bit of freelance work