u/NeighborhoodRound455

I’m super new to the bike scene. Bought this for $75 on marketplace. Replaced the handlebars and stem already for a more upright ride (both are unknown brands but I think they work and feel great). I also had a lot of fun doing the install and I’m looking forward to working on it more. Looking to add a front basket, wider tires, and leather accents (seat + grips). Most importantly, I’m looking to do a 1x conversion and swap the grip shifter for a trigger. Does anyone have any brand recommendations for this and any tips on the install? The numbers and sizing can get kind of confusing. I’ve heard 1x10 is the most common and easy to find parts for, but can’t decide if it’s worth having an extra gear or 2 with a 1x11 or 12.

I need to deflate my tire to put it on a new wheel as the one it’s currently sitting on is bent. I also won’t be able to take the wheel off as it can’t squeeze past the brakes while inflated. When I tried deflating the tire, some air came out and quickly stopped. It is now slightly leaking tubeless sealant and I’m unable to deflate it. I just bought the bike off marketplace and I’m unsure why it has tubeless sealant as I know there is a tube. Is there a quick fix for this that doesn’t require removing the core of the valve? I don’t have the tools for that yet unfortunately.