You haven't stated your geographic location... but the common paid/legitimate approach is https://f1tv.formula1.com/. If you are a sky subscriber, I think they have an online thing too.

Mods are working on community rules, and starting next week discussion of pirate sources will be against community rules. For now they're taking no action on piracy threads and than to make an advisory comment similar to this one (I'm not a mod though), as they haven't finalized/published the rules. But non-legit sources won't be kosher to discuss next week.

Sorry, I'm in the US but I'm fine using a vpn for geoblocks