e.g your bench. Warm up and do a few light weight benches, then, 60kg x 12 70kg x 10 80kg x 8 90kg x 5 each week you will get stronger and you will be able to do more reps and move up the weight easier. Dont worry about the exact number of reps, just do as many as u can and up the weight and keep going...
Also make sure your diet is good, most people dont eat enough, you need protien, slow digesting carbs and healthy fats...
The problem is your weight. You shouldn't be struggling until the third set. Don't worry about low numbers, it'll increase. You should also work some strength into that routine. Typically I do a 10 x 3 followed by a 5 x 10. If you're still new, I'd go with a 5 x 5 (or 8 x3) and your 3 x 10. Just remember to select the weight that's right for you. The last sets should be where you struggle. Hope this helped.
Also, remember appropriate rest periods depending on what you're doing. If it's low reps at high weight, typcially 2-3 minutes is fine and if its high reps at low weight, around 60-90 seconds works too. These guidelines aren't specific, but try not to exceed them. If you feel you can recover with less time and still give the same effort, then do it!
Floor press works the top half of your bench, and that is where the OP said he was failing. In general, top end/heavy tri work should take care of that.
I personally like them because I've had a lot of success with them, especially with increasing the number of reps on my "last raw warm up". My boyfriend's bench also increased quite a bit when he replaced his speed work with chain FP.
You bench 70kg! You don't need to do anything special except follow a good simple program (starting strength with appropriate accessory work, a bill starr 5x5 variation ...) and build some muscle. If you've been doing the same thing for a while, change it up.