What is the best free software to analyze my openings?

Hello guys. I'm not a premium member so I can't use the chess.com opening explorer to see my stats in different openings. I download my chess.com games with this python script https://www.reddit.com/r/chess/comments/9ifkaq/how_i_downloaded_all_my_chesscom_games_using/ which is incredible. It gives a pgn file for each month. I used to analyze my games with Scid which worked perfectly well. But recently I'm having a lot of trouble with it. The program randomly crashes so I'm looking for an alternative. I looked up the internet and saw some names. Scid vs PC and Arena were among them. I don't know which one to pick. My intention is not to analyze each game individually to evaluate each move, but rather I'm looking for something that I can put in some moves after I import my games and see how many games I have won/ lost in that position. If you have any experience in using these SWs please shed some light. Thanks in advance.

https://www.openingtree.com/

@Kadenstarr This site is awesome! Thanks!