If you are looking for a NEW bike, then you need to consider a NOS bike from a prior model year which an LBS may have or a USED bike which you buy locally (
which MUST look close to pristine if you don't know its history because it will probably be expensive to replace worn components, especially if you cannot DIY) because you have probably set an impossibly low price target ...
REGARDLESS, the MTB you choose should be based on WHERE you will be riding ...
WHERE you will be riding will generally dictate the type of suspension which is preferred.
For "flat" rails-to-trails type of riding, you won't need a bike with ANY suspension ...
Clean Master Adam4adam Mathway
If you simply want a bike which can handle FATTER TIRES + FLAT Handlebars, then a Hybrid with a Rigid Fork will probably be a suitable choice (
just to name ONE-of-many options) ...
Near the other extreme, for rutted trails with inclines then you will probably want a bike with GOOD suspension components (
Fox, Manitou, Marzocchi, Rock Shox ...) ...
Stick with the "name" brands which are
sold in bike shops ...