Oracle have a great free tier.
For free (not a trial, but forever free), you can get a virtual machine with 24gb RAM, and storage of 200gb.
you might wanna consider that.
If you do choose to use oracle, I'll note you that you do need a credit card, tho it'll not be charged unless you manually upgrade your account to paid account.
I'm not advertising them, I just really think they're great and I'm using it myself.
Be extra vigilant with your backups though, free stuff always has a higher chance of weird stuff happening, once they just removed my VPS after my trial ended and told me to re-create it.
Of course.
Need to be extra cautious so you don't get a surprise bill for your birthday.
That's what I liked more about Oracle as compared to AWS or GCP etc', is that you need to manually upgrade your account to paid account. and if u don't then you just can't create another machine or another block storage.
But still it's extremely important to read every word so you know what you're getting yourself into.
I've been at Contabo for years before moving my server home, was always happy with them. Just for something like Nextcloud you want a lot of storage space which gets expensive fast with a VPS...