"No, I always travel with my friends or family. I think traveling with friends or family makes me less lonely, when we see something new or some beautiful scenery together, I can share my feeling with them. At the same time, when we have some problems during the vacation, we can try to solve them together. At last, time spent with friends will become a treasured memory for each of us, and all of us will remember it forever!"

No，I always travel with my friends or family . I think traveling with friends or family will not make me feel lonely when I see something new or some beautiful scenery together because I can share my feelings with them. At the same time, when we have some problems during the vacation, we can try to solve them together. Finally, time spent with friends will become a treasured memory for each other and all of us will remember it forever！[Note: I changed "At last" to "Finally" because "at last" usually indicates a long time period before something, like," At last, I have the final book" or "At last, the cycle is complete." "Finally," can be used similarly, but it also means the last item in a list or thought, like your sentence.]

No， I always travel with my friends or family. I think travelling with friends or family will not make me feel that lonely when I see something new or some beautiful scenery together， I can share my feeling with them. At the same time, when we have some problems during the vacation, we can try to solve them together. At last, time spent with friends will become a treasured memory for each other， and all of us will memories it forever.