Are hand release pushups better?

Hand-release push-ups will give you a much stronger pectoral contraction than a regular push-up. Each rep starts from a "dead" position where there's no contraction in the prime movers. ... They'll give you roughly 10% more range of motion than regular push-ups. This is significant for muscle building.

Why do my arms give out during push-ups?

Flared-out elbows are the result of insufficient triceps strength. To correct the problem, spend more time working on strengthening those arm muscles. When doing push-ups, make a concerted effort to keep your elbows as close to a 45-degree angle out from your body as possible.