Just focus on the top 10-11 and that should be enough. I dislike XRP and Doge and stablecoins. Which leaves us with; BTC, ETH, BNB, ADA, MATIC right now, I like Avax too because the creator is a Turkish guy and I am Turkish as well so that's a bit of a proud thing for me, but you do not have to if you don't feel like that, and SOL is literally at 11th so its not really that bad down the line, you can even go as low as DOT and LTC as well, both of which is great. So a quite good portfolio of; BTC, ETH, BNB, ADA, MATIC, SOL, DOT, LTC, AVAX these ones that you can collect? That should be insanely good.
There are better coins above the 11th spot. It's only a shame that the top 10 is mostly occupied but a not so really good coins and there are three stable coins which I think a waste of slot. I think you are a bit biased about Avax because I am not really hearing a good feedback about this coin but I can't blame you much since the coin came from your own country.
@OP you already have a Bitcoin but that alone is already a solid investment. You can choose to pour most of your money on that coin and you will be just fine. You don't really need to complicate things when it comes to crypto investing. Plus some coins might only decrease your earning potential.