One of my two machines crashed a lot until I moved two Containers to my local server. They are quite small in regards to RAM and at their limit quite fast. Maybe check that.

Also I read somewhere that you could enter credit card details and this kinda upgrades your account in their system though you still do not pay. Something to do with throttling free machines in favor of paid customers.

Oracle has an always free tier which provides two x64 AMD based virtual machines. They are more or less cloud based calculators in terms of performance, but out of experience I can tell you it is more than sufficient for a few docker containers.

European locations are available.

Somebody was banned for posting the GIF of the Nazi Guy getting knocked out (you know the one).

The community is not having it.