Hello and welcome.
Plenty here to learn from and chuckle at.
Frustration and patience are your biggest hurdles by the sound of it. You Tube is great, but no replacement for a proper teacher and I would heartily recommend visiting one, even just for a few months to even out your technique. I would also counsel against changing the songs to make them easier, if you only play the stuff you can already play you never progress. Changing them to fit your voice is one thing, but trying to avoid chords just because isn't doing you any favours long term.
But also, don't get too hung up on playing them exactly as the records, most of us here can't play everything and do simplify songs to a degree. At the end of the day... just enjoy the journey!