Hi and welcome.
I understand that things in life can be very stressful. It might make it easier for you to separate the quit from your life mentally. Almost nurture and protect it as you would a newborn as I really genuinely believe it is an amazng gift we give ourselves when we quit, more so in the face of a lack of support. In honesty, you don't need anyone to support you and you absolutely can do it alone. It's all about you and what you choose to do now, how best for you to look after you (no one else is doing that or you) and how you choose to move forward in your life.
I want to add that I and so many of us were almost "scared" to quit. The reality is with every hour, morning, day etc that I passed I felt a growing sense of self belief. It was actually pretty powerful and built some genuine self respect alongside a healthier me and bank balance, a wonderful "side effect" of the quit :) We feel like it will be a battle, but in truth it's a series of thoughts to quit and about sticking to the choice that makes you healthier, wealthier and more balanced as a person. It's about learning new habits, to replace those that aren't serving you anymore. There is nothing in the physical as you half expect. So focus your thoughts and get a list to carry around with you maybe about why you want to be free of nicotine addiction and look at that when you're tempted.
Speak soon. x