I am so sorry for your loss.
May the Lord fill those areas you are missing now with her apart from you in the present and give you strength and guidance to press on with His best path for you.
I lost my wife of 32 years from cancer and it was a very dark path for the first 6-12 months, especially the first 90 days.
Stay close to family and keep yourself in a positive place. I had to pull away from news and politics for awhile because I needed to stay focused on keeping my head above water.
Spouses and or long term partners over time become part of you bringing you love stability and strength. When they are gone it takes time for their absence to set in (several weeks to a month or two) to deal with the impact of the loss because parts of you are still in shock/denial, depending on your level connection. You could feel like half of your person is missing along with some guilt over areas of your relationship. I dealt with these feelings. Focus on taking care of your health and stay active while you are emotionally, spiritually and mentally adjusting.
Beware, dating online is crazy and full of scams.
God bless you PghPanther!