Please correct my grammar

⚫︎I was full of happiness to be with you (This is not common. "Being with you made me so happy" or just change "to be" to "being") 


⚫︎You always try to do your best so I can try to do my best. (This is good and accurate)

I hope this helps :)

Please correct my grammar

⚫︎I was full of happiness to be with you
I was very happy to be with you. 

⚫︎You always try to do your best so I can try to do my best. 

If you do your best then I will do my best. 

I hope that helps you.