As far as the early failures, USA had a similar learning curve. For example, it took 7 tries before the first successful Ranger probe, which took photos of the

As far as the early failures, USA had a similar learning curve. For example, it took 7 tries before the first successful Ranger probe, which took photos of the moon on an intentional suicide mission in order to get roughly 1-foot resolution. But along the way they perfected techniques such as clean-rooms, telemetry, and redundancy. It seems newbies often try to do too much. For example, an early Soviet Mars probe carried a mini-rover. It was overly bold: they should have kept it simple at the time, putting survivability over gizmos. Add fancy stuff on later missions after the basics are perfected. This incremental approach worked well for Soviet Venus probes. Early Japanese probes similarly tried to do too much too early.