I wipe sitting. I think most people probably do. Standing up will push your arse cheeks together, so the poo inside the crack will just smear everywhere.

As for bidets, I don't use them. They're very rare in my country. I just wipe with toilet paper. I try to get my arse as clean as possible with the toilet paper, so I wipe multiple times.

Thank you for reading my post about my pooing habits.