Moving from finding real bugs to make real exploits

Hi

I started pwning from a year from pwn college, some THM, and I was quite good. In this month, I started getting into the real world. I find bugs, crashes, report, and wait for CVEs. But the problem for me is I can't exploit them. I can exploit the same bug in a CTF chall, but in the real world I can't, because of the stability, how large the target is, making me have the exploit just in my mind. And this is especially in kernel. When I was trying to re-exploit an old CVE using a different way, I get hit with the internals, nf_tables, TCP, and network. Those are complex. My feer is the internals and large targets. Did anyone pass with this and find a solve?