Don’t use an app specifically for stuff like this. It’s a privacy nightmare.
https://www.vancouvertrails.com/regions/
https://bcparks.ca/plan-your-trip/maps/
Many websites out there with lots of trails listed. Local stores will also sell physical maps with trails marked around here.
Don’t fear the well known trails, they are maintained and made for the general public. People going off map and making a mess is disrespectful