There are many ways to watch YouTube without Ads on your device.
YouTube Vanced is no longer available, so here are few Options for you
1 – Firefox Browser with uBlock Origin Add-On (OpenSource & Free)
Download and install FireFox Browser on your PC, It is opensource and free Browser. Best in terms of privacy & security
2 – Chrome browser with Adblock Plus extension
Apart from blocking ads on YouTube, it can help you block unwanted ads on other websites too.
3- Brave Browser
Other Option if you want to Try is Brave Browser which by default blocks the ads without any addons
1 – NewPipe Android App (OpenSource & Free)
Best Alternative to YT Vanced, this is an opensource project so security is best assured.
2- Firefox Browser with uBlock Origin Add-On (OpenSource & Free)
Firefox is an Open Source browser, with ublock enabled in addons, you can enjoy same benefits as the desktop browser
2 – Brave Browser
Brave Browser blocks all ads by default, and is privacy focussed
1 – Brave Browser
Brave Browser blocks all ads by default, and is privacy focused and is available on apple iPhone as well