Unfortunately KiCad doesn’t have a one-stop up to date tutorial. Trying to use a stone age v3 or v4 tutorial doesn’t work for v5.1.
For library management Rene has written some tutorials in the FAQ section.
I don’t think you should give up. If you get past the first obstacles it gets much easier. I may be partial but this user forum is really good source for help. It of course depends on your needs – how many designs you will ever do etc. – whether it would be easier to do it without an EDA, but if you’re really interested in PCB design and will continue that career or hobby, it’s worth spending some days or weeks to learn some EDA.
This is a more generic problem for newcomers without experience in PCB design. The truth is that even expensive commercial EDA packages don’t cover all the components you need. Learning to create your own libraries and designing your own symbols and footprints is a must. There’s no escaping that. Quite many users even in this forum who have experience with several EDAs and long career can tell you this, and even that they don’t rely on any ready made libraries but design all of their own parts (or their companies have engineers who do only that!).