I've looked some strategies up in the internet but i always get steamrolled as austria. If i forge a claim somewhere against venice and go to war against them they call in so many allies that i simply get crushed. I tried to ally with castille but they refused to come to war 
Then i tried to defend the HRE provinces against conquest of burgundy and what happened, burgundy crushed me in all my battles altough i got like 30.000 units and they only 11.000. They are on military level 5 and i am not, so the sieges go much faster for them with their cannons. I lost sundgau that way and tried to reconquest it and now a colation of 15 states have formed against me and switzerland is crushing me again. It always looks like my morale drops way faster than those of my enemies and my people start running away.
I thought austria would be "easy" and venice is described as an easy target in the wiki. I don't seem to get it. Ok i am a total noob in EU4 but i can not barely even make it to 1500
Any suggestions?
Then i tried to defend the HRE provinces against conquest of burgundy and what happened, burgundy crushed me in all my battles altough i got like 30.000 units and they only 11.000. They are on military level 5 and i am not, so the sieges go much faster for them with their cannons. I lost sundgau that way and tried to reconquest it and now a colation of 15 states have formed against me and switzerland is crushing me again. It always looks like my morale drops way faster than those of my enemies and my people start running away.
I thought austria would be "easy" and venice is described as an easy target in the wiki. I don't seem to get it. Ok i am a total noob in EU4 but i can not barely even make it to 1500
Any suggestions?