Yeah, all your routes are not working 
It’s because of RouterOS limitation: recursive routes cannot be resolved via interface routes (i.e. gateway=pppoe-out1 is bad route).
As a workaround, you make a copy of your PPP Profile that is used for that PPPoE connection, set “Remote address” to your Host (e.g. remote-address=8.8.8.8) and then simply remove a route to 8.8.8.8. Everything should work after that.