Any free IKEv2 VPN I can try?

I want to try out GOS’s native IKEv2 VPN client, but neither of the paid VPNs I have access to support native IKEv2. Is there any free VPN that provides all the IKEv2 info needed ? Most that advertise “IKEv2” really mean “use Strongswan client”, which is not what I want to do. Yes, I know that free VPNs generally are bad. I just want to test, for now. Thanks.

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Tried http://freeikev2vpn.com/ But I’m missing what to put in the “identifier” field,
and that seems mandatory. Android examples on YouTube don’t have that field.

Finally got the native IKEv2 to work with a free trial at https://www.uplinks.net/
They give username password servername, no certs, put anything in identifier field.
The VPN service works, but lots of sites (maybe all those using HSTS ?) give “bad cert” errors.

Similar question (sorry, OP) what are the good paid options?