I was a huge Discord fan, but now stopped using it for several reasons. - I can't mute some channels completely. I have raised bug reports, tried all the various options, researched everything I could find in Google about this issue. Bottom line is that "mute" is taken by Discord to be "only mute, unless I think you need to hear this", with no way to fully mute a channel. - I only use Discord in browser and it now ha…
Right click on the channel icon and go to 'Notification Settings' rather than clicking on 'Server Mute'. From there you can choose whether a mention (inc./ex. @everyone/@here) counts and whether mobile notifications are enabled.
As for the client you may want to try Ripcord[0]. It uses less memory though I'm not sure you can mute people the same way. While I don't think it's ever enforced, technically using other clients is against the Discord ToS.
Either way there are plenty of reasons not to use Discord if you can.