Hey @gautiergodard, I've used https://data.world/ in the past which has some good stuff. If you use Snowflake at all, there's a native marketplace on there as well (including free to use stuff). There's also the option of making your own mock data as well with sites like https://www.mockaroo.com/ so that you can ensure the fields contain what you need etc.
Can also ask some questions to the OP and clarify where necessary, and I find alot of folks will compile and share data sets their directly for their own interest areas. Really cool and would recommend checking out, and maybe sorting by top all time just to get a feel.
