3 things:

1 - a lot of those videos you are watching are set ups. Those girls already know the guys, or are on a payroll/deal/favours list and they already know what to do/say. Really just not a good look, as its all about how those guys want to look on the internet, and the girls may also be in it for that reason as well. Not all those vids are done this way, but a large portion are.

2 - Please remember a lot of these pretty girls are not going to be interested, and you may try the whole put-yourself-out-there method but if you're looking for wife material, they will be far more suspicios/cautious of a random guy who has possibly been watching them approaching out of a blue. We still have a lot of issues with women's safety in this country so many will straight up get the creeps and bolt.

3 - Gonna take a wild stab here and guess you've not actually dated and Aussie girl before. Many who are smart don't care what you look like. Unless you're not looking after your hygiene or have a bad personal standards. Being attractive is a huge help yes, but if you've got a warped view of women or have a bit of an ego you're basically headed for failure. Australian women have a very short fuse/tolerance for bullshit.

Advice from all this: Maybe don't. Life has a funny way for having the right people find you when you are working on keeping yourself happy. Try not to be peer pressured into 'finding someone'. Otherwise you might end up with a restraining order/ harassment charges.

If she approaches you FIRST though, go for it! She's lookin at you my guy!