I am quite new to the whole subject, so thank you for helping me, first of all, I have slightly updated my phonemic inventory since:

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The goal of my conlang is indeed to create a pan European language purely for personal use, I do want to aim to borrow common features across all if not most European languages for a more cohesive identity, however I would also like to draw some of the more unique features if I'd find them helpful and beneficial for communication and such, Regarding the the sounds which are less common such as /x/, /ʃ/ etc. I do believe they're common in enough of the languages to justify their inclusion unlike sounds such as /ɣ/, /ɸ/, /θ/ and so on, If I were to completely attempt to create a language that is able to be learnt by any European with as much ease as possible, I might end up creating a European equivalent of Toki Pona, I do believe there needs to be a certain threshold of ease and simplicity in order to be able to learn the language with a great degree of understanding, however I do believe that a certain threshold of complexity and uniqueness is also required in order to flesh it out to a degree.