Tell you what your awesome I've put about 1800 hours in battlefield one it's best battlefield in my opinion but my god have one amazing game then 20 shit games but I love your video keep it up
Lots. Just go to multiplayer tab and use the server browser. Set filter to full or nearly full player count and go from there. There's usually at least 10+ servers that have full lobbies for me in NA East in the evenings. Whole pile of German servers too. In NA most servers are Conquest. There's only ever 2 or 3 Operations servers on the go. It seems to be more popular in Europe.
I also play on XBox and there's always around 8 full servers on conquest, in the afternoon. Try looking for tutorials on YT. Its easier than explaining.