The Union Cabinet approved the Surrogacy (Regulation) Bill 2020 that allows only close relatives to act as surrogates to needy infertile couples. Any "willing" woman can be a surrogate mother i.e. single women, only widowed or divorced, avail of surrogacy between the age of 35 and 45 years. The bill bans commercial surrogacy and legalises to needy infertile couples for the humanitarian or noble cause. The bill has looked on all the recommendation put forward by the Rajya Sabha committee and has also prohibited surrogacy to Foreigners, NRIs, PIOs, homosexuals, single parents, live-in couples and couples who already have children but are free to adopt a child under a separate law.
The reasons for surrogacy should be like the married couples inability to conceive even after 5-years of unprotected sex or intercourse, non-functional uterus, removal of the uterus due to cancer, the absence of uterus by birth, having a chronic medical condition where normal pregnancy is not possible, fibroids etc.
Now, as in your case, you already have a child and is a single parent(divorced) so the case is not possible of going for surrogacy but you are free to adopt. There was also a case that is reported where a divorced man had undertaken surrogacy in 2005, much before the bill came into effect. You can read the report from the link:https://timesofindia.indiatimes.com/city/kolkata/Divorced-man-adopts-surrogacy/articleshow/1251145.cms
“The most important thing in life is to learn how to give out love, and to let it come in." — Morrie Schwartz