With material like this, honestly, you can't. And I believe you shouldn't take the stress free option.
In general terms you have two choices:
1. Hope for back buds that might never come, have a stress free plant and maybe it will work and maybe it will not. This is the safest option if you hold your plant dear. It will probably bud on some of the bare wood, but that doesn't fix the straightness and the lack of taper that the trunk has right now.
2. Work with what you have and take a risky move that would force it to bud, at a high chance of losing it all.
Both options could result in you not wanting to own this pine anymore, either because the road is too long, or because it can never be what you want it to be.
There's another option that involves approach grafting the branches onto the plant itself, but that's a three year process and it's no guarantee of success.
What I would do is look inside the pot and see what the roots are doing. They are chunky, it's a tall pot, and you might be looking at more than a couple repotting operations to get them to work with you. This would firstly tell you what the game plan can become; if you find large and thick roots, reconsider growing a tree from seed. Because yeah, 5-6 years of growth would get you a similar sized plant. And if the work involved would take you 6 years to finish: repot in year one, in year three and year five. That would slow the whole process down. That is worth all of it, if you're dealing with prime material. With a ramrod straight pine, not so much. Material selection can be difficult and enthusiasm gets the best of me a lot of the times, I'm not judging but I would like to be an open book about the quality: it's not great.
If the roots look nice and there isn't a hidden trunk-sized bulge of wood in there, I want to propose two options:
Option A is to hack the tree back to that whorl of 8 branches, chop off 6 of them and screw a good woodscrew in there.
Screw another one in the base of the plant and use wire to bowstring the trunk into a funky shape. Cutting hard like that, will yield you some buds most of the time; it's a scots pine, they respond dramatically when in good health and being chopped hard. I would leave two branches in case one gives up, and in summer remove the worst one.
Option B is to hack back to a nub just above the first branch, leave a centimeter or four. The bud formation will happen too, but now you have a pliable branch you can work with, at a nice angle too! If you don't touch the roots this year, it'll probably bud all over the place and in two to three years you wouldn't recognize it anymore.
Both A and B are risky operations and depending on the state of the plant, it might not get out of it alive. But design wise, it would "reset" this plant for you and give you a bunch of potential in 2027.
As you can see from the link I provided, I've been trying to do this myself a couple times and I have to admit that I like the fiddling and trying to make a marble out of a turd, but I also have to admit that I have trashed half of these project trees once I got an idea of the wait and care time involved and the potential outcomes being worth that investment.