Now v later??

New pool owner here. Per recommendation of contractor, just had the pool drained and cleaned/acid washed so just now seeing the bottom. (Had lots of debris and algae).

I’ve received lots of mixed suggestions/quotes that are all over the place for work. Since I don’t wanna get swindled, what work needs to be done now v. what can wait until next season? The pool has some cracks and there are tiles missing. https://imgur.com/a/f0shF8i Can we get away with filling/using it this season and postponing major repairs until next?

Also, does the pool need to be resurfaced/renovated at all? Or is there work that can be done on it that is less expensive?