Just grab them as low to the ground as you can and pull them out, taking as much root with it as you can. The plant will focus its nutrients and efforts on the sections not being torn out. Any time you see another escapee, grab it and pull. They will become less frequent as the main body fleshes out and grows.
Nature doesn’t like bare empty spaces so consider filling in that large empty barked area with some more crops and raspberry escapees will have some competition and become less likely as well.
Nancy Birtwhistle has some great books that can help a bit with the cost of living. They include recipes for your own cleaning products and toiletries. It’s only a few £s here and there but they start to add up into some real savings, plus you get the benefit of knowing exactly what’s in your products, peace of mind from potential health effects, as it’s all vinegars, citric acids, and alcohols instead of (to the layman) mystery chemicals.
And to save even more money they are available on the high seas, although she’s put considerable care and attention into them so I’ve purchased the real things. But for getting started, they are available is all I’m saying.
Obviously that doesn’t help with buying a house or anything as they’re crazy prices everywhere but it’ll save you on your shopping bills each week at least.