So as you can see my last game had really bad graphics and i think that is the reason no one rates it.

If you are interested just send me some of your works. If we won, you can have the prize since i live in Iran and i can't get the prize for myself.

I really liked the graphics in your Cavejam game. I also think it was one of the most interesting games of the jam.

Yes, I thought your line based vector graphics were fine however I didn't think the "glow" effect around the lines were particular suited to the super low resolution you chose. 

To get an idea of some very nice retro style graphics, which I think suits your style, see these games here:

• https://spectrumcomputing.co.uk/index.php?cat=96&id=17728
• https://spectrumcomputing.co.uk/index.php?cat=96&id=6959
• https://spectrumcomputing.co.uk/index.php?cat=96&id=10729
• https://spectrumcomputing.co.uk/index.php?cat=96&id=6538

If you are doing line based graphics, 256 x 80 resolution is a good choice, and choose a limited palette. There are lots of cool palettes to choose from here:

https://lospec.com/palette-list

Leave off any effects (like glow) that would lower the effective resolution further.

Teletext graphics may be something that you want to experiment with, but I understand that this is THE most difficult type of art because it's so hard to fit a lot of concepts into a tiny amount of pixels.

I didn't think your graphics were too bad. Even so, I can understand you wanting to make them better. Perhaps try somewhere like https://www.deviantart.com/. This is supposedly the biggest artist web site on the planet with over 26 million registered users. Some of the artwork there is absolutely fantastic and they do have pixel artists. Try Projects in the forums, where people ask for and offer their services, sometimes for free. You'll need to have a pretty good description of your requirements and allow them plenty of time to do the artwork. Good luck.