Foss encrypted contacts with sync

I'm trying to deGoogle my contacts

But

Don't have a home server
Don't trust myself not to accidentally wipe my data if not backed up by an online cloud

So I'm looking for a zero knowledge cloud sync solution that's free

This exists for notes with notesnook, anytype and others.

I especially like a decentralized solution so not relying on one company to stay alive.

Is there a contacts solution for this?

What do you use?

Thx

Syncthing-fork

Sd-contacts

2 devices, like a laptop, also with syncthing

Set it up, optionally add a script that removes old .vcf files or remove them manually

Local, traffic is encrypted, so no encryption needed

I'll delete accidentally one day so looking for a cloud solution pref dectralised

lawman tuta works fine in this matter

there's OpenContacts from fdroid

I use it for over 3 years now. I highly recommend it:
https://www.etesync.com/

E2E encrypted - if you forget/lose you password, the data will be gone.
2$ a month for a cloud option.

There is a Linux CalDav proxy service so you could plug it to an e-mail client.