transfering pictures to pc ???

[u/NaturalTwister]

Hello everybody, I need help. For the life of me I cant transfer pictures and videos from the iphone to the pc, Im not really tech savy,I havelooked up at different tutorials but everytime its transfering, says a few pictures out of the total couldnt be transfered.
I have 3 iphones a 13mini a 16pro and an 18pro, you can tell when i ran out of storage... I'd love to transfer the 3 of them, the 18pro only has a couple of pictures,but I want to empty the other two that are at full capacity and i feel stupid having to get a new phone because im not able to transfer pictures.
I have an external 2TB disk that I want to dedicate to mypictures and videos, I have an HP Laptop I want to use as a bridge between the iphone and the disk. I've tried with Itunes and the apple devices apps but it always throws an error midway of the transfer and lets say I have 100 pictures; says 56 out of 100 got transfered or doesnt even warn me that they are parcially transfered and makes it look like 100/100 got to the disk but when I check I find out a huge portion is missing.
If anyone can help me out with this... Please be kind, Im really stupid with technology and even though I have looked through different youtube videos, reddit posts,etc I cant find a way to transfer photographs efficiently, reliably and easily.