Sure!
Wait, come back, here me out! First, what makes our elite warriors so good in combat? Secret techniques? Tons of training time? No, what makes them so good in combat is that their performance under stress is so close to their performance in training. Any halfway decent civilian action pistol or 3-gun competitor has the raw marksmanship talent of a Tier 1 operator. Similarly, every LE officer must demonstrate their marksmanship on the qualification range. Yet, the same officers who hit 80-100% in qualifications statistically hit under 25% of the time in actual shootings which happen at closer ranges and that is just a hit anywhere on the body!
So, to get as good as a Tier 1 Operator, you would need to invest the same time as a typical dedicated competition shooter. Only once you get to a decent level of proficiency, instead of burning more ammo and going to more competitions, drop to just a maintenance level on marksmanship. Then; take the time, ammo, and match money savings and spend that on realistic, stressful training. Force on force courses, advanced classes on CQB, marksmanship, and tactics pertaining to self-defense.
I know you are still probably thinking I’m full of crap, but understand a lot of what a special operator does in training and on missions has nothing to do with individual combat skills. Military tactics, gear training and prep, communications, breaching and hostage rescue planning and on and on, not to mention mandatory briefings on topics having nothing to do with combat. Subtract all that peripheral stuff out and the time they spend working on their shooting skills and on stressful live-fire or FoF training, a dedicated person (with a regular job) would have time for that. It’s just a matter of priorities.
So, what to do if you don’t have the time and budget of a serious competition shooter? Go to a basic marksmanship course. After; practice what you have learned at the range while saving up for a 1-3 day defensive shooting course. Practice these new skills while you save up for a force on force, or similarly stressful course to help you better tap into those raw skills you developed under stress.
The SEAL who shot Bin Laden said he got out of the Navy because he stopped getting adrenaline dumps in combat! He was so stress-inoculated, a gunfight was the same to him as training. Realistically, none of us (thankfully) will get there, but with realistic FoF and other more stressful training you can really start to bridge that gap between square range performance and performance under stress.