one of three; so I don’t get it

here is one of my practice solder trials. looks just like video on this old house. but I keep getting big turds of solder on actual plumbing. dang. not hot enough? burned off all flux? it was properly prepared. dang dang. still no hot water. so now I've picked up a compression fitting. I really wanted simple solder solution!!! sometimes what I dislike about being a chica is that I didn't get handyman lessons as a little girl! instead I loaded the dishwasher. I don't even own a dishwasher!! ok little frustrated and feeling a few undisclosed curse words locked under my lips. ps am glad I am female. just frustrated at what I don't know.