Am I really just that bad?

Hello, community, I have been playing this game since season 1, started playing ranked around season 2. At around the time of the end of the season of season 3, I was bronze 1, so close to making it to silver but fell short. One of my other league friends has only been playing since season 3ish and had gotten gold his first try. That made me feel like a piece of poo that gets stuck in the sewers, never getting out or just finding a new shitty place to rest. Season four starts and I try my best off the bat to try to get to gold at least, I succeed. That didn't last for too long, I got demoted from gold 5 40+ lp, all the way down to silver 4. Through that time I was getting demoted I experienced a myriad of disconnects, getting called for stuff, needing to go use the restroom, being distracted by people talking to me, getting called (on the phone), not being able to plays for days at a time, being occupied with other stuff, and finally my computer for some reason being the only computer in the household to have internet problems and occasional crashes. My friends that are gold+ do not have these problems, in fact, they live a lot better than I do, I know that for a fact. Now, I am not blaming these problems for me being bad. All I want to know is, even then with the occasional computer crashes, internet problems etc. Why cant I get back to gold or even higher? Am I really that bad? Do keep in mind that my friends have better internet and actually have gaming computers. Anyways, I feel like I'll never get back or any higher or to even consider what I want to do with this game in the future. Am I really just that bad?