Buying a house in Bali

As a non Indonesian citizen you can only take a long term lease.  Foreigners cannot legally own property in Indonesia aside from through a PMA (large scale corporate business).

The lease you should use is called a Hak Pakai.  You can Google Hak Pakai Lease and you'll find all the details on how these long term leases work, which is almost as goodl as an outright deed of ownership.

If you legally live in Indonesia you best option would be to lease/rent
You can own an apartment but you have to purchase directly from the developers ( and take a gamble) very similar to Thailand but I’m not sure if In Indonesia you (for example) can only own apartments between the 10th and 20th floor,
They’ll be a minimum spend also, this varies from one region to the other, I could be wrong but Im sure Jakarta is about 10billion IDR / us$ 720,000 and with being an expat you’ll be paying huge amounts over it’s actual value
Some beautiful places in Bali and stunning properties to be had at very good prices (the wife wants to move out that way)
Some stunning properties for obscene rich also

Simple time.

You can't legally buy land unless you have a PT company, that being expensive and way out of reach for the vast majority.

Buying land illegally or using a dodgy nominee scheme can (and has for others) mean you lose everything with no hope of getting your cash back.

You can legally buy some types of flat/apartment but consider value for money and resale value. A lot of places are overpriced and the second hand market is very limited so you're likely stuck with it or be forced into a big loss if you want to dump it.

Renting or a long term lease is much easier.

Next up, what are you doing by way of immigration documents?

The best way is to follow Ubudian's excellent advice about renting a house or a piece of land long term, perhaps for 20 years or so. After 20 years your house might not be worth much, and of course if you don't renew your lease then you lose it all except for some fond memories. As Ubudian stated, this long term lease is called a Hak Pakai as opposed to a Hak Milik which means you'd own the land but that wouldn't be possible.

Most foreigners who settle down in Bali, and most of them fall in love with Bali,  do it through a long term lease unless they are married to an Indonesian in which case you can buy it through your wife.