Split LACP Between Two L2 Switches???

In efforts to maintain HA, how can I split a 2 or 4 port LAG between two switches??? Example, if not using stack cables and using two Unifi switches for instance.

Server A has 4 nics, or 2 whatever. 1 to switch A 1 to switch B, or 2 to A and 2 to B.

Pretty sure I can only have it per switch in UniFi. Not Span across both...

So , what is common practice? I want to split between two switches to maintain availability if one switch fails.

Cheers