The immediate plan is to continue growing, learning, and communicating with an ever-evolving sense of security and trust. Then, don't start talking about rings, living together, and retirement, until you've had a chance to go through at least one cycle of the seasons.
Let your kids go. Let your sons fall down and pick themselves back up. Let your loneliness be filled by someone other than your kids. Let your new partner into the starting lineup.
A relationship coach can Give you a sense of hope; Give you a taste of how a "relationship coach" works; Explain how coaching is more like a physical trainer and less like a therapist; Help you clarify your goals.
Once your kids are out of the house, learning to find yourself and what makes you happy, is much more important than seeking your next sexual partner. In fact, I believe the first step to divorce or breakup recovery is finding your own inner joy again.
Work on the feedback loop in all interactions with your partner. If you can get the core link between the two of you solid and healthy, you can move together towards a jointly-imagined horizon. Don't settle. Don't let things get off track. Always speak your truth.
The good news is there are a lot of potential people out there looking for relationships. And the apps and sites help you connect with a huge variety and range of people. Finding the needle in that haystack is your challenge, but if you go about it methodically and efficiently you can and will find a life partner.
Blessings to all of the amazingly gorgeous women and men out there. I know it's not easy for you. I hope you find your way to a balanced and healthy love. You deserve mutual respect and not just adoration.
There is absolutely no hurry. You have all the time you need. Spend time together. Spend time apart. Listen. Learn. And move forward.