About 4/5 days ago i send about 145$ in another coinbase wallet from my coinbase account.After transaction i saw that he only received about 1.45$.And i have been hearing a lot of technical issues recently in coinbase
I don't think I understand what you are referring to. Have you sent $145 in Bitcoin to another Coinbase account, and that person just got credited $1.45? Which is just 1% of your initial amount. Sorry, but that's not very convincing.
In some cases there definitely are certain fees involved, but this is just not realistic. So from there I assume you are talking about something different, but just don't know what describe your issue properly.
I am using Coinbase quite regularly to pay out certain people, and thus far everything has gone through smoothly without any issues. The only issue I ever had was a 1 hour delay to withdraw Bitcoin.