I am 5'10 and 154 pounds and cant hit my first pullup, I can do deadhangs for 60 seconds and active hangs for 20, but when I try to do negatives I just fall off the bar I cant even hold the top position for long, I tried doing australian pullups but I dont feel my back on them and dont know if they are actually helping, can someone give me advice? I dont have resistance bands or any access to a gym. Should I just do my workout without thinking about back activation? I have almost perfect form from what I read about