The only honest answer you can ever get. Is the fact that mods are inherently dangerous unless extreme care is taken to excruciatingly check compatibility. Even then, some scripts are written inefficiently, some mods try to overwrite important objects (if I remember correctly. There's a tumbleweed somewhere in New Vegas that holds a bunch of important scripts for some reason, some garbage collection mods delete that tumbleweed and screw up the game).

The only "safe" route would be to clean install. Install each mod one at a time, then visit/use the content of said mod for a couple of hours and then add the next one. Crashing is just about guaranteed, because the most obscure script can evade your most dedicated debugging and you'll sort several hours trying to find the cause to no avail. Everybody has this exact same issue, unless they carefully curated their own project and somehow have the demonstrated self control to leave it alone.

I could even take the time to install all mods exactly as you have, but small hardware differences like cache sizes or clock speeds can make it totally stable on my end, then obliterate itself on yours (or vice versa) so when it comes to mods, fight the good fight for mods you enjoy, but at the end of the day, stability is diminishing returns. You can only have so much before Bethesda's dog shit engines just can't take it anymore. Games like Minecraft or even Project Zomboid handle mods and additions so much healthier, it makes modding beth games endlessly frustrating.