'I used to do something' is past. There is no present. You cannot say 'I use to do'.
To talk about the present, use the present simple (I do).
Compare:
past |
he used to play |
we used to live |
there used to be |
present |
he plays |
we live |
there is |
- We used to live in a small village, but now we live in London.
- There used to be four cinemas in the town. Now there is only one.