I have a problem when I flush the toilet it doesn't always go down and you have to flush again then it seems like it takes the water a long time to fill up it just keeps running a lot longer than it should because in the other bathroom there is no problem with the flushing but it doesn't flush right in this bathroom what is the problem and how can I fix it so the bathroom water will not run when you flush and it will go down the first time

Is this Low Flush toilet ?

I have a problem when I flush the toilet it doesn't always go down and you have to flush again then it seems like it takes the water a long time to fill up it just keeps running a lot longer than it should because in the other bathroom there is no problem with the flushing but it doesn't flush right in this bathroom what is the problem and how can I fix it so the bathroom water will not run when you flush and it will go down the first time Hey Kandie!
You have two problems. I'll take them one at a time. First the slow fill and then the slow flush. Here are two ballcocks, (see images). What one do you have?
Nowfor the slow flush. I have one that most repair plumbers miss.. Look down at the bottom of the bowl. If there is a small hole, then that is a jet that starts the syphon action. If it's clogged the water will just swirl around and slowly go down leaving solids behind. Take your finger,(UGH! ) and run it around the inside of the opening. Over the years minerals build up and cut down on the syphon (flush) action. If it is rough or you feel build up, take a table knife and put a bend in it to get around the curve in the bowl and chip and scrap it clear. Next take a coathanger and clear out the holes around the rim. They start the swirling action. And last, check the water level in the tank. It should be 1/2" below the top of the over flow tube. And speaking of the overflow tube, Make sure the small 1/8" tube from the ballcock to the white overflow tube is connected so it discharges in it and that it's flowing when the ballcock fills. This is what raises the water level in the bowl. For a good solid flush they all have to work together. Hope this helps . Tom