Jockey, jockey, jockey. I know you said you are doing, but it doesn't look like it in the first few minutes of the video? I hardly take my fiinger off the jockey button when defending and rarely actually tackle (unless I actually fucking certain I'm going to get the ball, or am desperate). As someone (can't remember who) said in this thread a while ago, you can get success by just jockeying and sprint jockeying, blocking passes/shots and just running into your opponent. I mean, I am using Koulibaly, Manolas and Allan though, so it's probably 'easier' for me!
The first goal, you didn't switch quick enough and track the runner, I'd be taking control of your number two much earlier and just jockeying in front of him. The second goal, you had a brain fart and moved your number 3 in a random direction and let them in! Again, just stay inbetween the ball the goal and jockey. I don't mean that to sound condenscending...but the amount of blocks I get by just doing that is huge. Someone battered me last night, like 3x the amount of chances, was much the better player, but I won 2-0 with two breakaway goals and blocked 80% of their shots.
As for attacking, I use the 1-2's with fucking everyone apart from my CDM. I hardly cross, unless it's along the floor with RB, and they are generally cut backs. I always double stick flick/triple stick flick to get past defenders before I've recieved the ball...I'm playing 4-1-2-1-2 with and LM and RM. Which is basically 5-0-5! No big attacking players, all fast and average height/small (Mertens, Insigne, Costa, Dybala, Cuadrado). I just can't get on with players like Lukaku/etc, I don't think crossing works very well, no point in having a big lump. No fancy instructions apart from telling my CDM to stay back on attacks and I only did that last night...this was because I noticed Allan creeping up my scoring charts. Just got into Div 4.