Should I split my investments and buy 2 REITs or should I focus and buy 1 REITs instead? This is my first foray into investing ?

Probably good to start with ETF first.

Then after that into individual stocks

I would buy 1 REITS mainly due to brokerage fees.

If brokerage fees is of no concerns, then buy 2 REITS
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There is no correct answer. But in my opinion, if you have a lot of confidence and done your research on a certain reit, you can put your money in 1 reit. If not, it would be a good idea to diversify your reits.

With 2 REITs you reduce risk

with 29 REITs you reduce risk substantially, you could do that (no advertising intended) with Lion-Phillip S-REIT ETF = 1 single investment 🍀

Why not invest into syfe REIT+? It's diverse in multiple reits with an additional bond element that smooth out the ride.