Doesn't matter what bike you buy now as all it will tell you is what you should have bought in the first place.

Cheaper bikes will have just about adequate everything. Wheels- suspension fork (if that is the way you go) gear train etc.

I would suggest looking at something like a Giant Boulder Mountain bike with rigid forks. Change the tyres to Semi- slicks and go and ride it. Within a short while you will find the faults and either upgrade or sell the bike to get what you needed in the first place- except you will now know what you want.