To get the strut out, you also have to unbolt the upper control arm at the ball joint. I had this car for 16 years and have done it this way several times.

Edit: also unbolt the sway bar if have not done so.

You’ll melt the bushing if you heat up the bolt on the lower control arm. I would grind off the nut with an angle grinder, probably the easiest way. Make sure to load up the suspension a bit to get the bolt out easier.

Edit: After getting the lower bolt off you can remove the entire strut from the car and figure out how to get off the shock clamp bolt.