The txs you're talking about happened about 2 and a half years ago, isnt it a little late to worry about them?
to answer your questions :
1 - No, when a transaction is sent, the account nonce increments once its mined, whether it succeeds or fails. just send the next tx with nonce = 3
2 - huh? Your ETH should definitely be still there
3 - No, the error ...