Living in a rented place I wasn't able to install a bidet. But I bought a nice little tool which I think is even more efficient and it's portable!
You fill it up with water, squeeze it and manually spray your ass clean. It's wonderful. It's called Happy-Po in Germany, not to confuse it with poo, would be Happy-Butt in English.
It's the perfect tool for anyone who wants to try, it gets the job done perfectly. If you have diarrhea and your ass burn like hell this will save your life.
Also I have a little kid and the time I save cleaning the kid afterwards... Phenomenal.
If this tool or a similar alternative is available to you don't hesitate, it's cheap (while expensive for a fucking plastic tube) but it works. You can manually control the pressure and aim, fill it with hot or cold water. perfect.