Don't use a torque wrench for loosening stuck bolts! It can affect the calibration, damage the mechanism, or break the wrench. Just use a high quality ratchet, and put a sturdy metal tube over the handle if you need more leverage. A lot of people will use a breaker bar, which holds sockets but doesn't ratchet, but a good ratchet is more useful and about as strong.
Here's a breaker bar:
https://www.amazon.com/Capri-Tools-Extension-Breaker-inches/dp/B00VPPK0E0/
Not very useful because it's only rated for 377 ft-lb, and it doesn't ratchet. There are lots of reports of people breaking breaker bars since they seem to be mostly cheaply made.
Many 1/2 in ratchets can withstand 800+ ft-lb.
Ratchet-Handles Torture Test - Hot Rod Network
I bought this long handle ratchet:
https://www.amazon.com/GearWrench-81360-Polish-Handle-Ratchet/dp/B00E3IGMUC/
The long handle makes loosening everything easier, and the ratchet mechanism should be quite strong. I have yet to have any problems even leaning on it with a ~4 foot tube over the end for leverage to loosen the crank pulley bolt.
One time my little 3/8 ratchet skipped trying to loosen a stuck bolt on the steering knuckle (before I owned the 1/2 ratchet). I took it apart, and there was no sign of any damage.