How to be in a long distance relationship without jealousy issues?

im in a long distance relationship with my girlfriend but i have jealousy and overthinking issues. everyone I've talked to said its normal but those 2 issues are what causes me and her to argue a lot because i get mad that she talks to her guy friends and she has the right to have guy friends but my jealousy and overthinking gets in the way. im trying everything to fix my problems but i can't find a solution to it. i have her instagram account and she has mine but she also uses other social media apps and that kinda makes me overthink too. i need advice on how i can overcome those problems cause I've tried everything and somethings kinda work but then i start getting jealous again and all that. i just want a complete stop to my problems and i need as much solutions as possible.

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her guy bestfriend keeps asking her who she's talking about when she says she's in love with me and pressuring her to leave me and her new guy friend keeps sending videos of himself to her and calling her love and queen. i told her to cut both off and she said she's promises she will but she hasn't done it yet
How to be in a long distance relationship without jealousy issues?
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