No, you can do 2x using web browser (fb login) too, I do all the time (since I play this game), even I did last 21 n half hrs before, waiting to pass 3 n half hrs then do it aging for the new day
For individual player training please dig in 'Tutorials n Guides' section, tons of valuable info in there.
One example:
https://forum.topeleven.com/tutorial...g-planner.html
For 10% bonuse, use your 8/10/12 player combinations of defenders + attackers, best if you have player with 2 or 3 positions, like mc+dmc, amc+mc etc. Then choose 6 drills, very easy + easy from three section (def/attack/phy), which cost you each turn 6.75% condition. If you do it with 2x video then you will need to do 3 times (2 turns with video, last turn without video) or if you don't like to use your video then you need to do it 5 times to keep 10% bonus every day.
Edit: here is the screenshot about 2x video using web browser plus which drills you can do for bonus, on first line/part (6.75%) you can do 2 turns with video and last line or part (6%) without video.