OK, that makes a lot more sense. I read the title and was just confused, since there are so many different engines.
tocano
Do you also buy your milk in bags?
It's a lot and honest work!
Although I sometimes question the purpose of preserving the past, I really respect people who put in the effort to make something timeless. A time capsule for the future to study an irrelevant and forgotten past.
I suggest going for addons recommended by Firefox.
For blocking ads and other annoying content, I suggest uBlock Origin. It allows you to customize your experience, and can have the same or better effect than some other extensions. It is also not recommended to use multiple ad blockers, as they may conflict with each other.
For deleting cookies, I recommend not using an addon, but the settings of Firefox. Under "Cookies and Site Data" you can choose to delete cookies on close and manage exceptions for the cookies you want to keep.
For translation, Firefox Translations is fine.
Search by Image, I never used but it is recommended.
I usually avoid "redirect skippers". As they can be as problematic as the initial problem itself. I cannot find FastForward in firefox and Skip Redirect is not recommended by firefox.
edit: spelling
you are taking this to the extreme without considering what you are saying. it is true that authors should be rewarded for their efforts to produce a piece of writting or art. however, sometimes some authors and publishers choose to hide this content, which may be useful when accessible by the larger community. imagine if certain inventions were not made public by their inventors. the entire race would still be living in the stone age.
The internet is absolute garbage now
Well, it always was. The internet was always filled with low effort webpages with ads from top to bottom. The only change is that as people got better at avoiding the old scams, new ones appeared with better CSS and more psychological manipulation.
ad-delivery platform
It is basically this. Most websites just try and dig into your profile, masking it as "personalized customer service", but the real intention is to know what you do, who you talk to, and try to sell you goods & services.
Depending on what you want, a clock app is something you can easily build yourself. Nothing more private than what is already yours.