I don’t use standard Firefox since they started enshitifying
Any Firefox forks should have this option; even Chrome (and Chromium) has it.
All a website with only first-party cookies can learn about you is “I’ve seen this user before”, which is only an issue if you’re worried a news site or something is trying to discern your private information from the articles you read, but for me the convenience of first-party cookies is worth it. I can see why you’d keep them disabled though.
Any Firefox forks should have this option; even Chrome (and Chromium) has it.
All a website with only first-party cookies can learn about you is “I’ve seen this user before”, which is only an issue if you’re worried a news site or something is trying to discern your private information from the articles you read, but for me the convenience of first-party cookies is worth it. I can see why you’d keep them disabled though.