何も考えずに生きていきたいって英語でなんて言うの？

Carefree is defined as being unworried and having a happy-go-lucky attitude towards anything.

"I want to live a carefree life."

This means yo want to live a life free from being annoyed by things or people around you. Easy-going can also be used in this case which means you have a relaxed way of approaching life. This does not mean that carefree people do not care but it just means that they are not worried about anything.

By using the word "issues" you are implying that you don't want to have any problems in your life.

This implies you are looking to live, "in the now", as it were...
No preparation or deliberating on anything...
Just letting life take you wherever the universe wants to you to go!

"I want to live without having to think about anything" this explains to the person that you would like to go through life without thinking about anything.

"I wish I could live on autopilot." "Autopilot" Means that you want to live without having to think just automatically do everything.

The two sentences you see provided above are excellent ways to express to your listener that you want to live your life without thinking about anything. In the first sentence you will notice the phrase breeze through something. This means to do something without any issues or difficulties. In the second sentence you will notice the phrase give something a second thought. This means to worry about something or someone.

To be 'care-free' means that you want to not have a care/worry about anyone/anything around you'
'I want to live without thinking about anything' means that you want to go through life not thinking about anything and just enjoying yourself

When you are trying to explain that you want to go through life without thinking about anything, then you may say it in the following ways:
-I'd love to go through life without thinking about anything
-I want to get through life without giving anything much thought