Ok, English textbooks mostly teach the structure "Although / though",
Although my wife and I are so busy,we spend time together every weekend.
Anne was fond of Tim, though he often annoyed her.
However, in reality, I heard a lot of people use "though" at the end of a sentence.
So, I checked the dictionary & found that "Although" & "Though" in the above examples are conjunction.
But, from OALD, "Though" is used especially at the end of a sentence to add a fact or an opinion that makes the previous statement less strong or less important
Our team lost. It was a good game though.
But, for me, It seems that "Though" that is used at the end of a sentence is more popular than "Though" that is used at the start of a sentence.