When I was younger I sometimes saw a figure that I'm convinced was an angel. I have a very powerful imagination though so I'm not sure. I also stopped seeing him as I got older. He would usually appear during the day at random times and always in the brightest sunbeams. He looked like a tall man with a lions head with flames for a mane and a sword at his side. He never spoke to me but I felt better seeing him and was never afraid. I know this sounds very dubious. But I was wondering what anyone who knows about angels would think. I named him Othniel: lion of God
He could've very well been a guardian angel. A lot of Children can see spirits and angels and things like that when they're younger but that tends to "weaken" when you grow older so to speak. Hence why you stopped being able to see him. Perhaps you should try to meditate on those memories of seeing him.