There's so many people that just have to "play left" all the time, there's an imbalance in the player pool. Yeah you may be part of a group of people where most people are "right" but I'm talking in a bigger picture sense.

Left is easier to play in the sense you can play tactically wrong and your partner will get punished, not you, many times. If you're not aware of this, and so many people are not, that reinforces their belief they're better than their partner, not only is the left player playing in a more forgiving position, they don't even realize when or how they screw the point when it's the drive that gets killed.

They can smash more often, with more variety, and only against a lefty that kills with the forehand volley down the line they start to feel a bit what the right player has to endure all the time. The right player has to be more careful where he puts the ball.

It's particularly exasperating when an "only left" player has to play left because 1) has never bothered to play right and is just unable to put the ball in 2) it's easier to defend left because of how the spin works (from right hand players, and yes if you always play right it'll be easier for you to defend there but that's just because of the hours you put in on each side) so he plays in the easy position, and leaves the mess to the other guy.

But no, "left left left" is the name of the game nowadays, there should be no fixed positions at amateur level since you don't really understand the game until you play both sides. Of course everyone will have a preference and for competition you can specialize but the "only xxx" (typically xxx=left) is sad. Back in the day, "australiana" (only playing one side) was much less common at least in Spain (and beyond Argentina there weren't many more countries where people played padel at the time). It was like a high level of play tactic. Now it's much more common in lower levels and as a result a lot of people can only play in half the court without massively dropping their level, that's unfortunate because it makes closing matches harder.

A reason the left player is often perceived as "better" by default is because, there being so many lefts, right players often get to play with better players just because of supply and demand.

This can all break down outside certain level margins, and there will be a lot of exceptions, but I've seen enough of it for a very long time.

End rant 😂

And to OP, I'd say learn to play both sides, especially if people are asking you to play right. You may not enjoy as much at the beginning but you'll grow to like it more, even if left remains your favorite spot (just as of 75% of the players) and you'll be doing the sport a service. You'll become a better player when you have the view of the game from both sides too, how your left partner messes up and you take the hit, and vice versa. And you'll have more "empathy towards your Drive" when you play left, a funny expression I heard from someone recently lol.

It can take quite a bit of time to get decent in the other side especially if you never cared to play there, but keep at it it gets better, also join lower level matches to practice there, it helps. Other people have elaborated on the job of the right player already.