Yes I definitely think you can change these things as they are all connected really.
If you try and have a positive mindset and want to do these things then you can but you HAVE you find a motivation that you give a shit about enough to be able to stick to it.
For me, I'd put on loads of weight and was also drinking too much. I started low carbing a few months ago and I have already lost a stone and am back in my old clothes nearly so it is like having a whole new wardrobe again, so that has kept me motivated to keep going.
I've been organised with my food which has in turn saved lots of cash as I'm mainly eating at home then taking my own food to work, only have the v occasional takeaway etc not all the time.
I think with Covid restrictions now is the perfect time as there is less temptation, less to actually...... Do to ruin the diet for instance.
Another thing that helped me was to wear a fitbit and try and get my steps in, I don't manage it every day but it gave me an awareness of sitting on my arse too much. Just doing chores around the house and say a food shop then batch cooking a few meals can do a few thousand steps.
I think for me anyway find it hard to stick to anything until I can see at least a bit of physical progress so that means with weight actually falling off, money building up in my account or my house getting better. But if you eat well you honestly have more energy for all the other things.
Important not to try and do TOO much all in one go because if you do and fail you'll be harsh on yourself but at the same time be mindful that it is all connected so try to set small goals against all the different problems and track your progress. If you are happier, you'll drink less too.
Good luck OP.