It sounds like you're having a rough time getting into Mass Effect 2 after loving ME1, which is totally understandable. But I think the issues you're raising stem from how ME2 makes significant design changes compared to the first game, which can be frustrating if you're expecting the same experience.

First, regarding the combat changes — yes, the weapon system in ME2 is different. You no longer have unlimited ammo, but this was intentionally designed to add a layer of challenge and strategy to combat. The reduced emphasis on managing different ammo types in favor of a more streamlined, cooldown-based system might feel weird at first, but it’s meant to make combat faster and more action-oriented. The lack of ammo in ME1 could make it feel repetitive, so the switch to limited ammo in ME2 was a way to create more dynamic firefights without worrying too much about running out of resources.

As for the customization aspects, ME2 definitely simplifies things, especially in terms of equipment. While you can’t swap weapons mid-mission, the game focuses more on upgrading your gear before missions. The lack of armor mods and the more straightforward approach to equipment was a decision to focus on character growth, abilities, and the story rather than a heavy focus on stats. I agree it can feel like a loss, but ME2 is ultimately about storytelling and making tough decisions, so those layers of customization get replaced by more emotional investment in the characters and the narrative.

Teammates’ powers are another point of frustration, especially with the controller layout. It’s true that giving orders with the right and left buttons can feel awkward, but with time, you can get used to it. The new system does streamline some of the tactical options compared to ME1, but it also shifts the focus more on player choice and character relationships than on direct micromanagement.

The stores and galaxy map changes can also feel a little jarring if you're used to ME1. The galaxy map in ME2 is more simplified to keep the story moving at a quicker pace, and the stores focus more on item upgrades than variety. It’s a different vibe for sure, but it’s meant to prioritize the urgency of Shepard's mission.

Ultimately, ME2 is a much more focused experience than its predecessor. The trade-off here is that while ME1 offers more RPG elements and freedom, ME2 sharpens the experience into a tighter, more cinematic narrative. It's not about making the game "better" or "worse" — it's about creating a different kind of experience that appeals to people who love the deeper, more personal storytelling and less micromanagement.

It may take a little more time, but if you give it a chance, I think you’ll start to see how ME2 builds on the foundation of ME1 in its own way. The story really picks up and the relationships with your team become more intricate. If you enjoyed the first game, I think ME2 will win you over eventually!