Welcome to SBO. Yes the bilge looks like it needs maintenance work by an owner that cares about his boat.
The images do not look like they will sink the boat. If the boat in in a marina tied to a dock and floating you have evidence that while grody looking not a reason to run away.
Looking at a boat to purchase, I would take a picture and note my thoughts and move on to the rest of the boat looking in all the places most folks would not look. As
@dlochner states “ structural issues “.
- Is the deck solid or spongy?$$$
- Condition of rigging standing and running $$$
- Condition of sails $$$
- Do all the systems work $
- What systems need replacing $
- Is the seller ready to take the boat out on the water and show me what she can of or is the owner afraid to untie the lines
Taking your word that this is a first time adventure, you may want to get help evaluating these systems and boat before you spend your money. A professional surveyor that you hire can provide the knowledge that you have not yet acquired.
That said there have been and will be new owners who just buy a boat. Spend time and money fixing the boat. Some even untie the lines and go sailing. Most survive the experience. Have tales to tell their friends. Some realize a boat can be an expensive hobby to the uninformed or those who lack a DIY plan. This is not limited to boats.
Let us know what path you choose.