Designing the IT infra of a non-profit with a IT team of 1?

I'm helping a small non-profit handle their IT infrastructure. There's nothing too fancy, just:

* Main website using NodeJS (hosted on Vercel)

* Postgres Database in Azure

* MediaWiki (hosted on a VM in Azure)

* Custom-build SaaS (also on VMs in Azure)

* Scrapers (Azure)

That's basically it. There are multiple small VMs which costs us a good chunk of our IT budget. I'd love to centralize them in a cheap dedicated server from Hetzner, but I'm concerned that it would take too much of my limited time to maintain it.

I thought about Dokku for the small webapp and MediaWiki, but I don't have experience with it, so I don't know how easy it is to maintain once setup, how backups work, etc.

My main goals are:

* Easy to maintain (using technologies as boring as possible)

* Price (the company is in Brazil, where we can hire some non-IT person for ~$400 USD)

Any suggestions on how you would build this infra?