No, ''used to'' is only for past habits which no longer exist. It has no present or future form. For a present habit, we use present simple: I run every morning.

No, not in the way you have stated. I used to run every morning. (past tense) It is incorrect to say 'I use to run every morning'. But you could use it in the following: I use my toothbrush to clean my teeth. I use my bike to get to work.

For the sentence you have mentioned, it's not right to use "use to" but instead it should be "used to" There is no such term as "use to" in the present for. This is an action for something you did in the past. EXAMPLES: I used to bake pastries. I used to play in the snow with my dad. I used to apply sunscreen everyday. You are recollecting a habit/action in the past but discontinued doing it in the present. If it's in the present you are interested with, you can use the word "use" instead. But if it's connected with the word "to" then it's automatically going to be in the past.