Here is a list of what i used in uBlock Origin. Maybe it will help someone :smile: .
Code:!Remove YouTube annotations
||youtube.com/annotations
!Remove YouTube message "You're signed out of YouTube"
youtube.com##ytd-popup-container:has-text(You're signed out of YouTube)
!Remove YouTube recommended videos at the end of video
youtube.com##.ytp-ce-element
youtube.com##.ytp-ce-covering-overlay
youtube.com##.ytp-ce-element-shadow
youtube.com##.ytp-ce-covering-image
youtube.com##.ytp-ce-expanding-image
youtube.com##.ytp-ce-element.ytp-ce-video.ytp-ce-element-show
youtube.com##.ytp-ce-element.ytp-ce-channel.ytp-ce-channel-this
youtube.com##.ytp-pause-overlay
youtube.com##.videowall-endscreen
youtube.com##.ytp-ce-element-show
youtube.com##.ytp-cards-teaser
youtube.com##.ytp-cards-button
youtube.com##.iv-click-target
!Remove YouTube recommended videos in the playlist
youtube.com##div.content-wrapper:if(span:has-text(/^Recommended/))
youtube.com##li.video-list-item:if(span:has-text(/^Recommended/))
!Remove YouTube "Related Videos"
www.youtube.com##.ytp-suggestion-set.ytp-videowall-still
! Remove "Changes to YouTube’s Terms of Service"
www.youtube.com##.ytd-popup-container.style-scope > .ytd-popup-container.style-scope
! Remove "A privacy reminder from YouTube"
www.youtube.com###ticker > .ytd-masthead.style-scope
www.youtube.com###alert-banner > .ytd-browse.style-scope
! 8/4/2019 https://www.google.com | A privacy reminder from Google
www.google.com##.vk_c.yAVMkd
! 8/4/2019 https://www.google.com | Looking for english results?
www.google.com###Rzn5id
! 8/8/2019 https://www.youtube.com | Youtube Join
www.youtube.com###contentWrapper > .ytd-popup-container.style-scope