Welcome.

2 is caesar cipher:
"my second goal was to get ten or more STEEM Dollars for a single post"

4 is base64 encoding:
"there was an old song about nintynine red baloons i liked as little child so an other goal was to get nintynine followers"

5 is hex coded string:
"as a first step to become a little bit richer i want to get a savings of one hundred and eleven steem dollars"


i work on 3 but has no idea how it could be coded