Is there any way to search for old game you were a part of, even if they have been closed or if you as the player have been removed?

I don't think there is, but would love to be wrong! There are some older games where I had a blast, but don't remember who the DM was or what the name was and would love to see what they are up to now.

Yes, there is a Search function on the Main Menu page.  However, in order to use it you do need to remember the GM's user name, or a significant word in the game title, you should be able to find it (you need something to search for).

Also, if the game is really old, then it might no longer exist on the site, in which case no amount of searching will find it.

gotcha. that was my worry, as it has been many years since I played on that game, so I have no idea what the game was called, nor the DM name. Only in the last year or so have I started writing down the DM's whose games I have enjoyed, even if they were short lived.