The planets that are not bothered by Mars and Saturn are the sun and Mercury. Mercury signifies siblings, communication, the mind and relationships with equals. Mercury has a difficult placement in house 12, but he is in his own sign, so he should provide you with some possibilities for friendship. Mercury signifies equality, which could make him feel a bit more boring than Venus or Jupiter. Venus is about attraction and being attracted. Jupiter is about happy-go-lucky and going for bigger and better. It might be the case that you somehow overlook (or do not initiate) certain relationship/friendship possibilities, because your Mercury does not have the sort of emotional charge, with which your Venus and Jupiter are struggling. However, Mercury is a fast and dynamic planet by nature and connecting with people through normal life stuff (that isn’t always Venusian or Jupiterian) is something that can be worthwhile.
Mercury is co-present with and rules your sun. Because of that, working with your Mercury might feel – perhaps not at first, but eventually – like something close to your heart. Mercury represents things like spirited conversations, games, theater and sports: meaning things we do just for the fun of it. Your Mercury rules house 9 of higher education, philosophy/religion, foreign lands/travel and ideals/law and consultancy. Your sun rules house 11 of groups, organisations and institutions. Somewhere along the way, it should be possible to find a way to connect with other people through those domains. My general impression is that if you try to find and build friendships, the safest route is basing them on equality (Mercury) and trying to connect them with yourself (the sun).