MeWe is probably the closest like for like replacement for Facebook, with similar features (minus the ads and spyware).
If you are technically minded you could consider building and/or hosting a site for you and your friends. Projects like Friendica and Hubzilla could help with this.
Like Gatsby, Gridsome collects data from various sources and generates a static site from it. Gridsome is a Vue alternative to the React based Gatsby.
For static site generators more broadly, also take a look at Eleventy and Hugo.
If you are willing to try something less established, Svelte and Alpine.js both make for interesting alternatives.
Telegram is a messaging app, available for all popular platforms. It looks and feels a lot like WhatsApp, and can serve as a direct replacement for it.
If WhatsApp wasn't a perfect fit in the first place, apps like Signal or Discord might better suit your needs.