best texture pack for weak pc?

well, my pc does not run minecraft nor at 30 fps right, would a texture pack solve?

Maybe BlockPixel or 32x Faithful would work for you - generally though texture packs are gonna slow your client down a hair. If you're already barely running MC, might just stick with your current setup.

I'd recommend the faithful texture pack, it is non laggy and is much more simple.

texture packs rarely solve low fps, so you should use optifine and low settings