Jitsi Meet can be self-hosted. The data will go through your server, but end-to-end encryption can be used.
Another option is Wirow. Again, data goes through the servers.
I do not think if there are any peer-to-peer video chat applications. If there were, why would there be a need for self-hosting a server?
Thank you for your response. Just one more question... If I am not forwarding any ports, will I be able to generate and renew certificates on my home server? As far as I know, the domain needs to point to the IP which is generating the certificates, right?
Mind sharing what were your issues with Joplin?
My only issue is that it does not have any widgets on Android. So, I use Nextcloud Notes when I need that. But Joplin is actually great. You can self host a joplin server or sync using a Nextcloud server. It supports advanced markdown and I like the UI as well.
You can try Bookstack, but it will work on a web browser only. Another option is Obsidian, but I think only the apps are FOSS, the backend is not.
OP said they want to stop using SearxNG.
Also, selfhosting it makesist less privacy friendly, if you are hosting it only for yourself, as the search engines your instance is contacting can easily determine that all those searches are coming from a same IP. Sp, even if it is preventing the telemetry collection, a detailed profile can be made on the person hosting it. Butiff multiple people are using it, profiling becomes difficult. Same is the case with using self-hosted VPNs. They are good against censorship and for some other things, but not for privacy.
Do they provide SMTP? So that I can use it in a Wordpress instance?
My banking apps and netbanking work just fine regardless of which country I am connected to. UPI (unified payments interface) requires an Indian IP, though. But I can still do everything while connected to my VPN provider.
I miss currency conversions.