Don't listen to those above.
It is possible to play stronger w/o advanced techniques, but eventually, you'll master those techs and use them too. (and i'd like to think that i am a very technical fox)
The key is to play smarter. Try to read your opponent. Out space & time them. One thing to do is to spam the laser in the air, full hop triple laser since you can't shl/ shdl. This will make them have to come to you. At this point, you have the advantage because they have to come to you and you can punish them. Make them miss their approach and own them in the face. Since they don't play advanced yet, use the shield grab, if you can shield usamsh. Make liberal use of the uthrow>uair combos/juggles. Try to juggle them. The key is to try to out-think them and to out-play them.
Over time & practice, you'll master the more advanced techniques and integrate them into you're game, but focus on your mental game now.
Practice keeping your focus on your opponents character, using your peripheral vision to see where you are in relation to them. You don't need to see what you are doing, you know what you are doing, put your focus on the other character. This will help you to out-think / out-play them.
Finally, remain confident. Don't fell down or bad. Learn from your mistakes, try not to fall into patterns, mix it up.
You won't become a good player w/o some advanced techniques, but you can improve.
I'm giving this advice both from how i remember playing, and from the mistakes that i have (and still do) made. Hope this helps.