The 729 pre-made's actually a pretty good bat. My suggestion is to take it to a table tennis shop and get them to put a new sheet of rubber on it. 729 or 729 Super FX should work great. If you can't find a shop, buy a sheet of rubber from an online supplier and get one of his club-mates to change the rubber (there's usually someone at most clubs who would know how to do it).
If you're looking at AliExpress:
https://www.aliexpress.com/item/32862804239.htmlhttps://www.aliexpress.com/item/32700053505.htmlIskandar