THere is a learning curve to all this stuff. You are not the first to experience those problems and you won't be the last.
A wise RV'er once told me you learn something new about your RV or about RV'ing each trip......HE was so Right.
Pay attention to all the little things, learn from your mistakes. Eventually you will become proactive and find/see issues before they happen.
RV'ing will never be a turn key foolproof activity.
There will always be a gotcha.Murphy's Law is alive and well,however that is all part of the adventure and part of the fun.