" When you say "protect", do you mean protect against theft or protect your privacy? You could use Electrum over Tor. That still means the server can know which addresses belong to the same wallet, but it doesn't know who and where you are."

--> yes, about privacy, thanks for those precision, although I don't really know how "knowing which addresses belong to the same wallet" can be harmful or not


"If you set Bitcoin Core to prune when you first start it, it will prune on the fly. So if you prune to the minimum (550 MB blocks), it won't take more than ~15 GB in disk space (my current chainstate takes 12 GB). But syncing a pruned node is just as demanding as syncing a full node (in terms CPU, bandwidth, RAM and disk activity), so it takes a while."

--> didn't know that, on the fly space is 12 GB but data download is 720 Go anyway, isn't it ? How much is the blockchain update by month, once first pruned is ok, like 10 Go new data download ?

"Bitcoin Core is indeed more private, especially if you run it over VPN/Tor."
--> will try my best to go for it


"Plus hardware wallet? Depending on how much you're going to store, it's good practice to think about safety from the start."
--> you right, my complete set up would be : AirGap wallet + pruned node + Sparrow

Have you heard about AirGap ? I found it to be the best solution ever lol, and want to get rid about ledger hw (although it is said you can use personal node to convey tx)