I have been using PC but after this I am going to switch to my phone instead and try out mycelium.
You are not much more secured on a mobile.
If you don't change your habits regarding electronic devices, you are prone to lose your coins again.
It doesn't matter which wallet you are using, just make sure to not download fake scam wallets and to not download any shady stuff onto your device.
Make sure to always have your software / OS up-to-date and you are
relatively safe.
If you want to be more than just relatively safe, get a hardware wallet or get a dedicated (offline-)device to store your coins.