Honestly the answer depends on your personal requirements. If you want a product exactly like Google's offering you are not likely to find it. Somewhat like if you buy into the Apple ecosystem, buying into the Google ecosystem is designed to be a first class experience and everything else to feel slightly second class. This is of course a sort of faustian bargain, but it is up to you if you take it.

There are alternatives that do e-mail, cloud storage, contacts and calendars if you're prepared to research them. I won't post a list but mention some categories of options: there are companies offering similar products (fastmail, proton), you can sometimes rent managed next/owncloud/e-mail such as exchange from some suppliers, or you can self host some or part of your needs (e.g. I know people who tailscale to NAS drives). My google account is only used for paid-for android apps, for example. I'm one of the self-hosters (but I keep an eye on the managed offerings from local companies). I don't use tailscale as I can wireguard to my router, but tailscale works well when you just want stuff that plugs in and works. Synology NAS drives apparently can be tailscale endpoints.

Ultimately, I try to avoid Google as much as possible and to a lesser extent other large cloud providers. This stems from exactly the kind of incidents the OP faces, along with the usual concerns about ads/tracking (and specifically not contributing to this as a business model).