I researched my family history for over forty years. My database has over 4,000 relatives dating back to the 1700s.
There is a lot of online genealogy databases online but most are crap. They are more of a collection of surnames and lack proper verification that the families are linked. It takes time to check records and cross-reference with other records to maintain accuracy.
I have certified birth, marriage, and death certificates for my direct lineage going back to Lincolnshire in the early 1800s.