I get it. Ads are annoying. Ultimately though they're the only way you're able to watch videos on YouTube free of charge.  From our point of view we simply tick a button when we upload - to monetise the video. The placement of the ads is all down to YouTube.
I would highly recommending looking into YouTube Premium.  I use it myself and aside from a number of other benefits such as downloading YouTube videos to watch offline (or on a plane), you can enjoy YouTube completely ad-free.  Not only that - but creators still get a cut of the YouTube Premium subscription, so you're still supporting your favourite creators.