After wiping VERY THOROUGHLY with toilet paper, use something like wet wipes, and use those VERY THOROUGHLY too. I use the store brand version of Tucks, which I carry around in the small version of the container. After I've finished wiping with them, I wipe myself off with dry toilet paper. If you can't carry something around with you and you're away from home, then when you've finished using the toilet, flush the toilet, stick a wad of toilet paper into the water, and use that to wipe yourself thoroughly. When you're finished, dry off with dry toilet paper.
I'm also considering installing a bidet on my toilet. For some reason bidets never caught on in the U.S. Apparently many Americans think that there's something wrong with using a bidet, just as they think that there's something wrong with a man wearing a thong.