A tourist visa or any other visa is still no guarantee that you will be allowed into the country. Ultimately, it is the immigration officer who determines that.
Thailand temporarily suspended filling of Thailand Arrival Card for travellers arriving via 16 land and sea checkpoints. This TM6 immigration form suspension is effective from 15 April to 15 October 2024.
You really talk about a local requirement. Bank statement to transfer a visa stamp is not a common requirement. And for me i not have any money for visa purposes on a Thai bank.
Last year august you already asked a simular question because you where questioned at the airport having many visa exempts. You already got a warning then. Get a proper visa!!
If the landlord of your gf is not willing to do your TM30 report there is a alternative by staying in a hotel. But ask the hotel first. They normally do it online and can provide you with a pdf file. Proof of report.