I've heard something about electrum having their own servers the electrum wallet talks to instead of directly to nodes or whatever that other wallets talk to and that this has some theoretical privacy implications. Is this true? Is there a way to configure electrum to use other servers or gateways? Is this better or worse than any other wallet? Sorry for the noob language when describing this.
It is known that BTC is not an anonymous currency, there are coins that do a better job on this point.
There are wallet that are created with the aim of improving anonymity: for example Samourai and Wasabi.
The same electrum can be used through the Tails distribution to improve the privacy.