Okay. Look, GaW is a confusing character to talk about. There are point where he can be completely ***** in singles, but (in my opinion), he's the second best doubles character, behind MK.
His smashes are strong, but are damn slow. He doesn't have many approaches. Bair, dtilt, rising nair, and even a fair sometimes. It just doesn't really cut it. However, once you get a character in the air, he can be in trouble. Take a look at this basic combo that I do. utilt -> utilt -> nair -> nair. You can even follow up with it, depending on the character and DI. But with no DI or anything, that's an easy 50ish damage. After that you have to play extremely smart if you want to close the gap on the character you're playing against. Sometimes it's near impossible to get in some characters faces and punch them in the eye with your firestick. However, if you're playing against one of those unlucky characters who get hit with your Dsmash after a dthrow, without teching it, (example MK) sometimes your best option is try to get them with a dash grab/pivot grab, and do that, and hope to god they don't tech it.
In doubles though, GaW SHINES. Team with a lucario or someone, and you'll be set. You can bucket pretty well every one of Lucario's moves, and then unleash havoc. Not to mention that GaW is amazing at saving people with uair and UpB. Those windframes are sexy. I would happily go pure GaW in doubles, if I could see my GaW improving anymore, but it just doesn't seem like he's getting anywhere. Even if I am on Wifi a lot more now, it just doesn't work. My GaW is stuck at a point where he won't get better.
Dirt. GaW is a VERY good character if you know what you're doing. You have to be a damn good reader, and you have to know what to do, when the opportunity arises. You have to know when to approach, and you have to know when to back off. You also have to know that bucket braking all the time, won't get you anywhere. That's one thing I'm trying to work on as well. DIing is very important to every character. Even a character who can stop his momentum completely. Try incorporating DI WITH bucket braking. For example, DI up and away from the side you're flying from, uair, bucket. It sometimes works a lot better than just mashing on A, in hopes of getting a nair out before you die so you can bucket.
I wanna see your GaW do good, I want to see you place well with him. Don't give up on GaW. You'll be amazing with him in no time. Just keep your chin up, get videos of your GaW. (Send replays to me, I'll record them for you. ), and put them on the boards, get people to criticize and give you advice. Soon, you'll be placing top 3. You got dis.