In my opinion, cross play is the reason for there being no constant 64 player servers. Prior versions of Battlefield had a server browsers that PC players could pick a server to play on. Console players had to "party up" and "Matchmake". Now that BF2042 has Cross Play, Its hard to make everyone happy. However, The addition of persistant servers in Portal is something my group had an interest in. We have put up a 64 player conquest server with stock settings, no Bots ( to keep server "official" full XP ) and a map rotation. The Portal server browser has search parameters. If looking for a specific server usually filtering by Conquest / Server name / search and refresh usually gets some results. I bet you will find several servers running stock settings, including ours. The trick is to find one with players on it. If you start with a group of 4 friends or so, you can usually get the server populated pretty quick.
The Experience Code I use is AA1MU2.
It has a 12 map rotation but you can customize yours here: https://portal.battlefield.com/
Make the best of it I always say.