So, Carl has already covered most things here.
But to re-iterate, generally speaking, people asking for help with this sort of thing are "lower level" players - Which covers a wide level of abilities.
In the UK (and I'm sure it's similar all over the world), there is a very big difference between a lower level player who plays at home for fun, and a lower level player who is in a league.
There are lots of "hobby" players, who might have a table at home, or play every now and then for fun, and are considering the "King of Table Tennis" amongst their friends - So much so, they actually believe they are pretty good.
The minute this self declared "good" player plays a match against a "lower level" league player, the lower level league players wins by a big margin.
Posting some really short clips on your technique will allow others to offer the best/most accurate advice, and you seem to be someone who is looking for good advice.
You say you are doing the "same stroke", but that stroke might be absolutely awful, and simply changing a few things will improve it dramatically, whilst allowing you to use the equipment you want.
So I'm not saying "post a video", to be difficult, or to laugh at you or anything negative like that.
It's so I, Carl, and many others who have been playing for years and years can offer the best possible advice, without simply "guessing".
For clarity, there are plenty of videos of myself, Carl, and many others online - So you can choose whether to ignore our advice, or go with it.
I'd always be a little cautious about taking too much advice from someone online who has no record of their ability.
I've seen a lot of entry level players give advice about various things (that is wrong), but said in a way that makes it seem like they are a seasoned veteran!
Anyway, good luck!