Bitcoin users trust it a lot because of its high security. here you can also deposit high amount of bitcoins without any hesitation. If you put in any other wallet there it can be more risky. In my opinion this is why I trust Electrum Wallet so much to keep Bitcoin safe
Electrum is recommended because it is open source and users can verify their code for bugs and to make sure it is safe for use, and even if you don't have the knowledge to verify its code, it is a wallet that is widely used in the community, and so it is also very well reviewed by many BTC users.
However, Electrum is an online wallet, and isn't recommended for a large amount of BTC, except you run it in an airgapped device that is completely disconnected from the internet.