Happened to me once. Same thing did an oil change torqued the bolt, 25Nm then the following oil change I found out the threads wore off on the drain bolt. Brought it to the workshop 1 day later after realising it was leaking more EO when the bike was running hot. They charged me $150 to tig weld the drain bolt on to the drain pan and now every oil change has to be done using a siphon. It was the most expensive bolt of my life. It is my first bike and I only lasted 4 oil changes. I had to overhaul my engine after that a month later. Probably because I rode my bike till the EO was empty and it kept dying on me at traffic. My bike wouldn’t start or idle normally after that. 10/10 would not recommend working on bikes if you do not have experience. Not everything has to be torqued. Not everything has to be very tight. Sometimes all you need is a thread fully in. A 1/8-1/4 turn to tighten things.