What are the best websites for estimating car insurance price without leaving personal information?
Your car insurance - for a standard car like a Camry - can be somewhere between 300 and 4000 $ a year, depending on your age, location, family situation, home ownership, credit score, the insurance you pick, some other stuff, and especially driving record.
This is a pretty uselessly large range, but any further detail can only be given by that personal information that you don’t want to give.
Of course, they don’t only use your personal info to make the calculation, but also to spam you with offers for the next thousand years. It is difficult to avoid the latter, but you can try with fake phone numbers (anything with -555- in the middle), and fake or one-time email addresses. But you need to use at least the right ZIP code (pick a street around the corner, for example), and you probably need to use your real driver’s license number, to get any useful result.