I would personally recommend ProtonVPN if you wish to have those features for free. they are extremely secure and have end-to-end encryption. and its free, and they have linux and macOS support along with windows support. however if privacy is of the utmost concern I do not recommend a VPN at all, I recommend TOR instead as it has much better security, and uses at least 3 layers of security organized like an onion, where the entry node does not pass any knowledge on your identity to the intermediate node, and by the time your traffic leaves the exit node, your data would have hopped from at least 3 voluntary machines and any link to you would be severed. this does come at a tremendous speed cost. however if you need privacy, the slowdown in internet speeds are definitely worth it. not only that but many organizations that sell things use TOR to do so anonymously.

some specific benefits of TOR (The onion Router) are listed below:

Access to deep dark internet websites and blocked websites.
Hiding your original Internet Protocol (IP) address.
Access to non-indexed pages in search engines such as Google, Bing, Yandex, etc.
Hiding all data regarding the source (which is you) and the destination.
Protection of information passed onto the network.
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