Basic Hindi Phrases

These are some of the phrases that I know, but I do not know how to spell them. Please correct me.

App kaise hai? = How are you?
Me amriki hoon. = I am American.
Kay app hindustani hai? = Are you Indian?
Me samajthe hoon. I understand you.
Thori thori = a little
Kay app hindi samajthe hei? = Do you understand Hindi?
Kea app angrezi samajthe hei? = Do you understand English?
magar = but

How do you say "I am doing well" in Hindi? I should know this, but I forgot it.

Basic Hindi Phrases

These are some of the phrases that I know, but I do not know how to spell them. Please correct me.

App kaise hai? = How are you?
Me amriki hai. hoon= I am American.
Kea app hindustani hai? = Are you Indian?
Me samajthe hu. I understand you.
Toli toli thori thori(female)/thora thora(male)= a little
Kea app hindi samajthe hei? = Do you understand Hindi?
Kea app angrezi samajthe hei? = Do you understand English?
mugar magar = but

main acchi hoon = I am doing well

How do you say "I am doing well" in Hindi? I should know this, but I forgot it.