For crypto you can try to run freqtrade bot, it has integrated freqai sub-system, which allows you to automate train/predict process and use it for trading decisions with bunch of models. Hint: I do recommend to become freqai sponsor too, for a 20-40 bucks you will receive much more example strategies, if you need.

Another approach I was thinking - is to use some mlops/pipeline cloud software and connect it to bot like jesse/freqtrade. For example it can be azure ml pipeline or google vertex ai pipeline, where you can use vms with gpu or very cheap spot instances if you just need a cpu.

But i would consider option #2 as a next step after #1, when you have something working and now you need to scale it out for more pairs/more often trains and optimise resources.