Thank you Hayden @hydn the new version of cosmic Desktop is much improved and you can enjoy that on a small laptop like mine also. I have a core i5 DELL XPS and the configuration is attached. I am using Brave Browser to save memory, Thunderbird email client, nvim, and vscode as code editor and python, go and RUST as the code language as of now mainly. GitHub Desktop as the git integration client, Wezterm as a terminal emulator. On this small laptop, with only 8GB RAM this works pretty well. May be soon, i will switch to a better one and then will see which configuration i set up for my use. This is all from me for those who are using small laptop and with this configuration it works well. Only cosmic Desktop and the embedded layout and no other themes or anything else.
