Too means as well or also.
I can do it too. Did you think that too?
Too portrays the idea of in excess or more than it should be.
This cat is too chubby. The shoes were too expensive.
To is used in expressions like to walk, to run, to paint, etc. (These are all verbs in their infinitive forms.)
I want to run around the planet. Did you tell her what to think?
To is used in expressions like to the park, to the postman, agree to a proposal. (The word to in these examples is a preposition.)
She handed the parcel to the stranger. I am going to the park.
Too much Too many
We often use too before much and many. It means ‘more than necessary’. We can use too much before an uncountable noun and too many before a plural noun, or without a noun when the noun is obvious:
I bought too much food. We had to throw some of it away.
They had a lot of work to do. Too much. (too much work)
There are too many cars on the road. More people should use public transport.
There are 35 children in each class. It’s too many. (too many children)
Many people drink coffee when they feel stressed. The warmth is soothing, and the caffeine in coffee might help you think more clearly. But if you drink too much, you may become even more anxious and irritable.
Write a sentence or two using to, too and two.