hi i have a bonsai tree that kinda died, after i repoted her, and after some time came back to life, but just half the tree has life, so now a brunch of life started to sprout in the bottom off the bonsai and the rest is dead.
What can i do to this tree to make it better? beautiful?
Thanks in advance, newbee here.

Looking at the poor quality of the material, and the way you have treated it, I doubt this will ever become beautiful.
You may want to start with the basics and look up the care guidelines for your plant (read all about tree care / cultivation / pruning under 'How To' and the care guidelines under 'Tree species'.

I would take cuttings, start from scratch and burn the rest.
It is beyond ugly.

Personally I would put it in s larger pot, just an ordinary flower pot will do. Keep watering and feeding it and looking after it as you would your other trees. Once the new growth has become the dominant growth carve the dead wood back to become another feature of it. Look up Graham Potter on YouTube he has some good tutotials on jin and general carving of dead wood. What have you got to loose, give it a try.

Yep i can try that.
thanks

I agree with Colwin, repot if needed too. Never give up! Let us know how you go please.

You have a cluster of branches now. Remove all but the strongest. Consider layering the old main trunk just about the current roots to get better roots.
Cut of all the dead wood, at a slant from the living section.

Then next year, you have a base with an intial trunk section to start working from.