hi,
I was looking today at the same pictures of this Renegade on sale in UA
https://facebike.ua/ru/product/bu-gorodskoi-velosiped-grisley
It's obviously a different model, without rear cantilever and also no derailleur hanger, but geometry-wise it could be a similar frame.
It has a very low bottom bracket, something I personally like as you sit gravity-wise more in the center of the bike as on top of it, like you also do with modern 29er or Gravel bikes.
I think this is a good basis especially for a taller guy like you and using this as an fast commuter bike.
Yellow is in general in my opinion also a nice color for a bike, especially compared to 90% of matte black or grayish bikes and cars on the road nowadays.
Yellow also goes well with Skinwall tires, especially modern gravel tires come in often with a bit more dark brown sidewall, this could look great with the bulky yellow frame.
The ad shows or lists everything you need to know.
If Google was doing a good job an 68mm BSA bottom bracket is already included, very likely squared.
It also has cable routing and hanger for cantilever brakes.
It looks like the steerer of the fork has threads, this would mean you need an 1 1/8 headset non-ahead but threaded and a proper quill stem.
If the Seat post size is just 25,8mm it's a bit uncommon make it more hard to find a nice and fordable seat post.
Maybe ask the seller if he still has the original seat post?