Thanks for your query.Based on the facts that you have posted it appears that you have Phimosis
since almost 10 years.
You do not want to get circumcised and want to try it yourself by stretching it regularly. This will create multiple injuries followed by fibrosis
which will result in foreskin getting hard and more and more difficult to get it retracted.
The only option now is what you think as last option of getting circumcised .