1. Yes, though it still requires that you take active steps to ensuring complience levels:
https://experienceleague.adobe.com/docs/analytics/admin/data-governance/an-gdpr-overview.html?lang=en
https://business.adobe.com/ca/products/analytics/general-data-protection-regulation.html
https://business.adobe.com/ca/privacy/general-data-protection-regulation.html
2. Personally, I find Adobe Analytics way easier and with more control and visualization options than Google... but transitioning can be a challenge.
Here is a guide that can help you: https://experienceleague.adobe.com/docs/analytics-learn/tutorials/intro-to-analytics/transitioning-from-other-platforms/transition-from-google-analytics.html?lang=en
3. There are no free Adobe Analytics packages.. based on your traffic and needs you would need to talk to a sales rep to price out a contract.
(This also sort of leads to my feeling for GA and the old adage "you get what you pay for" - even though Google Analytics has a paid 360 service, it's basically an extension of what you get for free - a few more custom dimensions/parameters and events; and your data is no longer sampled.... Adobe is never sampled, and has so many features and options available at the base level, and more features as you go up - however, it is expensive and it aimed more at enterprise level analytics as opposed to small businesses)