I was looking online and found this really lovely photo of a gradient background, and I wanted to know how to replicate it for my own works, I tried different things, some being applying colors using a brush and applying a blur filter, the other using the gradient mesh tool in illustrator, neither gave me the look I desired so does anyone know how to achieve this type of background?
Made this in 2 minutes in Photoshop. -Black background layer -New layer on top -Choose your blue color -Select your brush tool and choose the soft edge round brush -Turn the flow and opacity way down (10% each), enable the airbrush option and start stacking the color. -You may choose a lighter blue to get more highlights in the center of the blue :)
As @Ryan says, you were on the right track with gradient mesh, but they take a bit of figuring out. In the below image, the top one is the image from your question and below it is a version that I recreated with a gradient mesh. It's not exactly the same, but this only took a couple of minutes and could be made more similar with a bit of work. The bottom version shows the gradient mesh that I used. The two points that i have circled in red are set to the lightest colour in the background, all the other mesh points are set to the darker colour. After that it's just a case of moving the points and the handles around until you like what you see.