starting running can be daunting and the best intentions don’t always last in the long run. If you are not able to run 5k at the moment I would suggest getting a copy of Runners World Magazine, as it is always full of articles of how people start running.
If you can run 5k I would suggest you try and go to as many Park runs as you can.
Joining a club is an option but it was not a solution for me.
Motivation for an each run in the beginning is the hardest thing.
In any case, do find what works for you, and that may mean trying out different things until you find the right one for you.
Good few tips on how to stay fit https://www.theguardian.com/lifeandstyle/2018/sep/12/how-to-stay-fit-for-ever-25-tips-keep-exercising-expert-advice