Start reading up on theory work about smash neutral game and improvement; it'll help to better your understanding of how you should go about improving, and what situations may be counterproductive to certain aspects of improvement. For example - you practice often, but are unable to beat an opponent who doesn't, despite them appearing to play much worse than you (tech-wise). This would imply that you're lacking in some other aspect of play; you may be improving or maintaining better tech, but it'll be useless if you don't tackle the actual root of the problem. Figure out what that is. From the sounds of it, it's neutral game and spacing, which are often common issues that players who don't get much player-practice have. Find players who are better than you. Neutral/spacing can be read about and integrated into your play by painstakingly teaching yourself against a player who doesn't also reciprocate the same effort/knowledge (since they're just using what they have and don't plan to improve; you're not learning anything from them), or finding better players who
have a good neutral game and getting more interactive "examples" to draw from. It makes it much easier to learn a tactic when you're repetitively beaten by it, since it convinces you of how good it is, and you're gathering examples of where it seems to work best and not, so you don't even have to go out researching articles or observing top players (as much) and hoping you figure it out in your own. For that reason, even if you despise the lag on Netplay, it can be useful. If you're not going to any local tournaments anyways, it might actually be better for you to convert mostly to Netplay, and just maintain some tech practice occasionally on console. You'll find tons of crazy players who can prob best the crap out of you online lol.
Go to smash boards last
Try places like melee it on me or sites that have pros talking
I never see pro players on smash boards and you can't know ether the guy you are talking to is a scrub that never won in his life or Mr perfect there is Noway to know
This is awful advice. While 99% won't be top players you can recognize, smashboards and reddit are probably the most new-player-friendly, given that we often spend the time interpreting the information from other sources ( or just general advice) in a way that's more easily understandable. The middle-men.