Based on your post, you did the install in the photo. I think this DIY is beyond your skills.

You have the wrong trap, you have the wrong connector from your sink, the drain from the sink looks torqued, the connector from the trap to the outflow doesn't look sealed/connected.

For about $10 you could purchase a sunset/Ortho/readers digest book with instructions. For about $10 worth of wonder tape/magic tape you could stop the leak.

We just had the same type of situation, went to HD/Lowes and they showed us what we needed. You need to extend the pipe coming out from the wall, bring it in line with the drain from the sink, also I think your p trap is installed backwards. Hopefully my pic will help you, pieced it together as instructed, no leaks and trust me we are no plumbers, LOL! Good luck, you can do it!

thanks carol! did you have to cut an pvc or did you measure at home and someone at HD helped you piece together what you needed? thanks for your help!

If you don't own a $8 hacksaw, a $30 vice, or a $30 pair of PVC cutters, you need to step away from the sink, and put your fingers on your phone to call a plumber. Yes, you can DIY, but only if you are actually willing to invest in tools, and take the hour or so to understand how to use them.

I think you have more problems than you realize. It does not appear that there is enough room between the right side of the cabinet and the cold water angle stop to actually turn the knob, which means that in an emergency you would not be able to turn the cold water off. So you need to replace the current valve with a quarter-turn stop positioned so that you can actually turn it. Your drain problem is a little different from the problem that Carolt924 had, in that her pipes were close enough to lining up that she could install the trap without additional adapters. Your situation is not that simple.

I respect that this is a DIY forum, and we try to give helpful answers to get folks through problems, but DIY requires a certain level of skill, some tools, and some basic knowledge of how plumbing works. I'm not sure, from what we've seen of your installation so far, that proceeding on your own is in your best interest. You may be best served by calling a plumber. Good luck.

It leaks at the top of the P-trap because you've cross-threaded the nut and the flex-tube appears to be pulling the tailpiece from the vertical, which it shouldn't. I'd attach the p-trap directly to the tailpiece and then, with a few appropriate horizontal and vertical connections, connect it to the drainpipe without relying on flexible sections.

The only redeeming thing about those flex drain connectors is if you have used one, you know for sure that you have botched the job.