If its not too far for you, I’d suggest the Patapsco Valley State Park Trails. You can enter a price nice(mostly down hill track) from at the end of 195(park and ride). Try to find a map, as there are lots of trails and its easy to get lost if you’re unfamiliar.
I’m pretty new to MTB riding but if any locals want to hook up for some trail riding let me know! I am still trying to find the better trails in the area… and not get myself lost.