Yes a hot battery is a must, can you borrow one. From another car? I don’t know what you have there.
you can try to start With starting fluid before you clean the plugs, see if it kicks or not. Then if it goes with a hot battery you don’t have to do plugs. If it starts keep it running and get it warm.
I dont really have any other batteries that would work. I'm hoping to get another one this week or next. Hopefully that will fix my issues but I'll keep the post updated. :)