Where can i find travel partners to go Japan with me this summer?

i want to travel to tokyo this summer break but no one close to me has the time nor money to do so. i tried searching online for travel group mates but those cater more to the western countries and im from singapore. i also searched online for singapore travel mates but i cant find any site. i have not travelled alone before and i do not wish to cuz i believe travelling is about having fun with someone. i cant share my happiness by myself if im alone. i cant laugh out loud or smile like a goon can i? so i hope someone can tell me if there’re any asian site for travelling partners and preferrably, from singapore sites. i really really want to go japan this summer!!!

but there’s one thing im worried about. how do i trust the partners that im travelling with? i mean, i dont even know them. i have this weird thought that when im sleeping one night, they’ll take my money and passport and run away and left me stranded. or some psycho who’ll stab me when im sleeping. or maybe i watched too much thriller movies

so please help. thanks :)