What if bitcoin adresss end?

i mean maybe in 50 years all the bitcoin adresses will be already used

what can we do to solve this xDDDD
sorry for my fuckedup english but this question confuse me , i hope you understand what mean xD

Maybe? You could calculate how many addresses are there and compare them to estimates on diffirent factors.
By my knowledge, its impossible in 50 years and even if, we could easily change couple variables in bitcoin source code to multiply current possible addresses by 10x or 100x easily

so worry not.