If anyone is interested into self-hosting their bookmarks service so that they don't suffer this again. Here is a list of interesting open source projects that provides that

- Linkding https://github.com/sissbruecker/linkding

- Linkwarden https://github.com/linkwarden/linkwarden

- Servas https://github.com/beromir/Servas

- Grimoire https://github.com/goniszewski/grimoire

- Hoarder https://github.com/hoarder-app/hoarder

- LinkAce https://github.com/Kovah/LinkAce/

- Readeck https://readeck.org/en/

- Shaarli https://github.com/shaarli/Shaarli

- Shirori https://github.com/go-shiori/shiori