which type of bicycle should I consider for bicycle routes
I'm going to suggest you try a cheaper used bike before committing to anything expensive.

Your only real requirement is to make sure it takes larger-sized tyres.  Off road benefits from wider tyres than on-road.

The top thing you need is a bike on which you feel comfortable.  

In a year or so you can take your learnings, and decide what kind of bike will suit you best.  Your riding conditions may change as you grow fitter.

Many keen cyclists own more than one bike.  There's a running joke that all cyclists own N bikes each and they always want just one more ( ie N+1 )