You mention that the two of you argued frequently over only having one night per week with each other. Was this situation likely to be resolved in the near future? If not, it's probably the cause to him ending things.
Thing is, any time there are ongoing, unresolved issues - it means the relationship is very likely to fail. One or both parties will get fed up with the drama and angst and seek a calmer life.
I hope you can find yourself a loving partner who can give you the time you require.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.