Startup takes too long with secure boot

[Segilmez06]

I enabled the secure boot on my laptop. I created bundles and added to EFI with efibootmgr. The problem is, it takes too long to load the system. Usually takes around 30 seconds to see first kernel output. systemd-analyze shows 20s (min 15 max 25) for firmware and 5s for loader. Booting with secure boot disabled shows 5s for firmware and again 5s for loader. I far as I understand, it's doing some verification. Is there any way to speed up or skip this process? I did some search but can't find anything helpful.

I'm complete noob on this topic so I don't have any idea to attach which logs here, sorry about that.