Import games from another database as my own

I am playing chess on lichess.org and on chess.com. Over the time I have played loads of games on both websites and I want to continue to do so. I prefer the opening explorer on the lichess website by miles though, which is why I study openings on lichess. There is the possibility to filter games by player in the lichess database, which is incredibly useful in my opinion. Here comes my question: Is there a way to import games so the opening explorer recongnizes the imported game as my game? I have already tried importing games but even if I enter my lichess username into the PGN lichess wont show the game in the database. If there was a possibility to import games as my own, I could avoid using a third database for all of the games, which seems like the best solution for now.