The phrase "instead of alone" is grammatically correct and can be used in written English.
It is typically used to show contrast or a choice between two options. Here is an example: I decided to go to the party with my friends instead of alone.
I have always wanted a dog, but I have read that dogs lead happier lives when they live with another dog instead of alone with humans.
A design can encourage people to walk and talk with one another, children to play together in a park instead of alone in a back yard, and people of all ages to live near one another.
"People in their late 20's and 30's are coming in and asking for games that they can play with a group instead of alone on a machine".
Addressing the United Nations after the successful completion of Project Mercury and only two months before his death, the president expressed his willingness to see the United States go to the moon with the Soviets instead of alone.
With Gustafson shooting a solid but unspectacular 71 to lead the American Meg Mallon and Kathryn Marshall of Scotland by seven shots, Webb found herself in a six-way tie for fourth place instead of alone in second.
Mr. Palmer said several organizations planned to conduct a major outreach effort, offering flashlights, whistles and cards with safety information tips, like sleeping in a group instead of alone.
Safety data are presented on all 114 properly randomized subjects, excluding the 12 who received the DZB-alone instead of MMF alone.
Instead of walking alone, each of us would have an entourage: guards and a translator.
"Instead of sitting alone in my living room, I'm out at the ballpark.
Instead of sitting alone in a dark room, the singer went into a studio – and called some friends.
