"OTHER THAN
- Hard/ quick Brexit
- Looking after your own finances
- Hatred for Labour/ Corbyn"
Surely you have answered your own question OP?
1) Whether or not you agree with them, a lot of people voted for Brexit. While Labour may have disappointed Remainers, it's also difficult to argue that they are a Brexit party.
2) Both Labour and Conservatives believe that people are influenced by their personal finances, otherwise both parties wouldn't be making the manifesto promises they are making, so yes people probably are thinking about their own finances.
3) It's a toss up whether Johnson or Corbyn is more unpopular, but on balance it looks as though Corbyn is winning the unpopularity contest.