(NSFW) how can I be more pro-active for my girl friend to sexually satisfy her most & make her experience with all 'feel-good' factors?

I want to start by saying I am jealous of your girlfriend. I think it is great you are interesting in pleasing her sexually.
I do need a little more information on your current sex life, to give you proper advice on how to improve it. For example what have you done and what are you not willing to try? Are you giving her oral?
Without knowing your current sex life, I’d suggest trying to a a finger in her ass during oral, then maybe step up to a butt plug and/or anal beads during oral/sex. This process will work her way up to anal sex.
As for toys, I think the Butterfly would be great. It has a remote control, so you both can be involved. Maybe some bondage tape, or silk ropes for some light bondage play. You could also try a blindfold and a feather

Hire someone who knows what he is doing, and take notes. Or learn to communicate, really communicate, not just about sex, but about everything. It won’t be just in sexual areas that your are not communicating well.

What Violet said. You can also try warming oils, music, cock rings for thickness enhancement, vibrating cockrings, liquid latex…..etc. Go to the sex shop together. Play, explore, collect.

Simply slow down. That is the number one thing women say they want. The slower you go, the hotter she gets. If she feels rushed, you will get a rushed response, and not the fully developed experience you are looking for. But after reading your question, I think you already know this!
She is a lucky lady.

Make sure that you talk to her during intercourse. Tell her what pleases you. Tell her what you like to do to her.

Ask her to do certain things that you want her to do for you. Tell her it would please you very much. You say she does not talk a lot. She may be shy. She may not know what to do.

Some things just take time to get better at.

I get the sense—strictly from the wording of your question and your use of language in general—that you and your girlfriend are both pretty young. (I could be wrong; it may only be that you don’t speak or write English much, and I’m completely misreading this. But I can only go by what I see, and sometimes my assumptions are incorrect.)

If I’m right, and you’re young, then the best thing that I can tell you is to take it easy, to go slowly, and to “allow her” to express herself. Don’t expect or demand anything from her in terms of “feedback” and “aggressiveness”. She may still be shy in ways that you don’t understand yet. She may also be concerned that you could be “found out” by those around you. For example, she may be wary of being too demonstrative and maybe overheard, or she may just have been brought up that way.

So my advice would be to continue talking to her, both sexually and non-sexually, so that she understands your feelings for her aren’t only based on the sex you have together (or admit that to her, if they are), and be patient.

Why would you ask strangers what you wouldn’t ask your partner? If you can’t communicate, you aren’t ready for an important relationship? All NSFW questioners, this means YOU!!!